1. Field of Invention
This invention relates to a food product manufactured for human consumption. More specifically a crunchy, high protein, low carbohydrate product made primarily from eggs is described. The manufacturing apparatus and manufacturing process are also described.
2. Description of Prior Invention
Since before recorded history, humans have consumed eggs as a food. For thousands of years, eggs have been utilized as an important ingredient in thousands of food recipes. As an ingredient, eggs are often mixed into a batter with other ingredients. For example to make hundreds of types of baked goods, a grain such as wheat is used as a primary ingredient, eggs are mixed in to achieve properties such as cohesiveness, texture, and appearance while sugar is added for taste. In modern day western civilization, much cost and effort is expended by people trying to lose weight or to remain trim. One very common approach is to eat a diet significantly restricted in carbohydrates such as sugars and grains. People on carbohydrate restricted diets typically substitute in more protein and fat than what is considered a traditional diet but these people can and do loose significant weight. Once a consumer starts a low carbohydrate diet, it quickly becomes apparent to them that few crunchy types of low carbohydrate snack foods are available in a conveniently packaged product.
Crunchy snack foods such as potato chips, corn chips, crackers, and cookies all comprise high carbohydrates and sugars and low protein. Thus people whom are on carbohydrate restricted diets very much miss the possibility of snacking on crunchy snack foods. As described herein, a crunchy snack food made primarily from eggs is a good substitute for crunchy snack foods made from carbohydrates and sugars.
The present invention comprises the ingredients, apparatus, and manufacturing process required to manufacture a crunchy snack food that is low in carbohydrates and is high in protein. Depending upon ingredient proportions, preparation, and cooking duration, the crunchy egg snack food described herein can take the form of a chip, a cracker, a cookie, or a puffed extrusion. The crunchy texture is described in terms of having a low water content, an audible “crack” sound when fractured, and as brittleness as demonstrated in fracture when subjected to even a low angular bend in a Three Point Bend test. During product consumption, the brittleness and sound comprise dimensions known to consumers as “crunchy”.
Accordingly, several objects and advantages of the present invention are apparent. The present invention utilizes eggs as the primary ingredient. Eggs are a well known and accepted form of protein easily metabolized in the human body. Agricultural infrastructure makes eggs readily available in large quantities suitable as a high volume food source. Egg proteins prepared and cooked as described herein form a crunchy product suitable for packaging and distribution as a long shelf life snack product. A large segment of the population is on a carbohydrate restricted diet and looking for products having the attributes of common snack foods including crunchy texture, fracturing brittleness, fracturing sound, product cohesiveness, customary tastes such as salt, cheese, and onion and hand or mouth sized dimensions suitable for eating with one hand while driving or on the sofa without any fuss or mess.
Further objects and advantages will become apparent from the enclosed figures and specifications.
a illustrates an oiling the cookware step.
b illustrates a deposition of raw egg batter step.
c illustrates a solidifying of egg cooking step.
d illustrates a solidified egg cutting step.
e illustrates an ingredient additive step.
f illustrates a crisping and drying cooking step.
a illustrates a physical size dimension of a finished crunchy egg product.
b illustrates a final product texture test setup.
c illustrates a final product texture test completion.
a illustrates an alternate raw batter deposition into a mold step.
b illustrates extrusion deposition of whipped raw egg batter.
c illustrates an alternate crisping and drying cooking step.
a illustrates a two crunchy egg product shapes and texture tests thereof.
b illustrates a tortilla shaped solidified egg product before and after crisping in the microwave.
c illustrates a variety of larger diameter hand sized egg products.
The first process step is performed on the cookware 23 itself in an oil deposition module 25 where the cooking surface is oiled as is further described and illustrated in
The second process step is an ingredient mixing module 27 step. Commercial grade food mixers are well known and readily available. For a crunchy egg cracker product of
half cup of liquid egg white
two tablespoons of dried egg white
half tablespoon of dried onion soup (salt, pepper, onion, garlic, flavoring, coloring)
one tablespoon of dried onion
quarter teaspoon of baking powder
two tablespoons of dried butter milk
Note that by volume the above ingredients comprise more than 50% egg by volume and by weight. Water can be substituted for liquid egg white in which case egg will comprise a lesser percentage of inputs. For the purpose of comparing the ingredients herein to ingredients of the prior art, the product herein is greater than 50% egg by volume after the manufacturing process is complete. During the heating processes described herein egg ingredients expand including the dried egg white which absorbs water and expands dramatically when microwave heated for example (increasing the product's volume and decreasing its density) whereas the other (non-egg) ingredients generally do not substantially increase in volume during the manufacturing steps. (Baking powder and yeast are examples of ingredients that can also contribute to product volume expansion.) During the solidifying step below, the onion soup causes the solidified egg to be an off white beige color, food coloring can be added to the above ingredients to achieve other desired colors.
Within the ingredient mixing module 27 the ingredients are mixed through an automated stirring activity to form a raw egg batter 28 that has a consistency suitable for gravity feed or pumping and deposition, pouring, or extrusion as described subsequently herein. Within the raw egg ingredient deposition module 29 the raw egg batter is deposited onto the cookware 23 as illustrated and described in
Following is a partial list of ingredients that have been utilized in differing proportions to produce crunchy egg products similar to those described herein; whole egg, egg white, dried egg, dried egg white, water, onion, garlic, salt, pepper, cheese, taco flavoring, barbecue flavoring, dried buttermilk, oil, fat, shortening, yeast, baking soda, and baking power. Many other flavoring and coloring ingredients are possible.
Carbohydrates from the egg ingredient are as follows
Dried Egg white—8.2% of calories come from carbohydrates
Dried Egg white, glucose reduced—4.8% of calories come from carbohydrates
Dried Whole Egg—3.3% of calories come from carbohydrates
Dried Whole Egg, glucose reduced—1.5% of calories come from carbohydrates
Whole egg—1.8% of calories come from carbohydrates
a illustrates an oiling the cookware step. In this manufacturing step, an oil deposition apparatus 25a sprays cooking oil 24 onto the surface of the cookware 23. Canola oil is suitable and flavor ingredients can be added as desired. Programmable ingredient deposition sprayer assemblies suitable for this purpose are available from commercial food manufacturing equipment suppliers. They have programmable pumps and valves that open and close at timed intervals to deposit a desired amount of fluid onto a targeted surface within a defined amount of time. The same oil deposition apparatus 25a can be used in
b illustrates a deposition of raw egg batter step. The raw egg batter 28 from the ingredient mixing module 27 has semi-liquid consistency to be pumped from the ingredient mixing module to a raw egg deposition apparatus 29a which deposits it onto the oiled cookware 23.
Programmable batter deposition nozzle assemblies suitable for the egg deposition apparatus 29a are available from commercial food manufacturing equipment suppliers. They have programmable pumps and valves that open and close at timed intervals to deposit a specific amount of batter material onto a cooking surface or into a cooking oil fryer within a specified amount of time. The same raw egg deposition apparatus 29a can be used in
c illustrates a solidifying of egg cooking step. Inside the egg solidification module 31 a microwave (not shown) transfers energy into the egg which enters as a raw batter and exits this step as a solidified egg 30 having the appearance and consistency of a cooked egg, solid yet with a high water content. For the above crunchy egg cracker recipe, a raw egg layer two mm thick enters the microwave solidifier and a solid egg product exits the microwave four mm thick after forty five seconds. The solidified egg takes on a pleasant beige color due to the egg white solidifying with the coloring from the dried onion soup ingredients. The moisture content of solidified egg makes it a suitable surface for receiving sprinkled on flavorings (not illustrated) such as dried cheese, salt, pepper etc. Flavorings sprinkled onto solidified eggs adhere well throughout the remaining manufacturing steps and add visual appeal to the final product.
d illustrates a solidified egg cutting step. Once the egg is solidified it can easily be cut into pieces. The cookware 23 advances to the cutting module 33 where a solidified egg cutting apparatus 33a roles across the cookware 23 cutting solidified egg into pieces one and a half inches by one and a half inches by four mm thick. The solidified cutting apparatus is a six inch diameter cylindrical stainless steel molded fabrication having a number of edges around the external circumference each spaced one and a half inches apart and a number of edges running the cylinder length spaced one and a half inches apart. The solidified egg cutting apparatus 33a creates a plurality of cut egg solids 32 that remain in the cookware 23.
e illustrates an additive step. An additive application apparatus 35a is similar to the oil deposition apparatus 25a of
f illustrates a crisping and drying cooking step. The cookware 23 containing a baking solidified egg 38 enters the crisping module 37 (the 350 degree oven) and is cooked for five to ten minutes. During cooking, portions of the product will change from an off white color to a tan or brown color. When thirty percent of the product transitions to the tan or brown color, the product is fully cooked and dried and is removed from heat. This yields a product very low in water content (two percent moisture by weight) that is crispy and crunchy according to Three Point Bend tests as later described. After moving through the steps in
A programmable moisture sensor such as from MoistureTech.com can be added to any step during the manufacturing process to ensure moisture meets targeted standards.
While the ideal crunchiness is achieve at approximately two percent moisture content, in practice the final product has some variability between zero percent and ten percent moisture content by weight.
The above egg finished product is described as over fifty percent egg content by volume, as below a crunchy egg product can be manufactured with nearly one hundred percent egg content by volume. Also as below a puffed crunchy egg product contains a high volume of air; for the purpose of measuring contents by volume, air content is not considered. Also given the binding properties of proteins within eggs, a crunchy product can be produced using the processes and ingredients described herein wherein the final product has thirty percent egg content by volume.
a illustrates a physical size dimension of a finished crunchy egg product. A finished crunchy egg cracker product 41 is easily held by a human hand 43 as is common with nearly all crunchy snack foods currently consumed by consumers. Multiple product units (individual crackers) are packaged together in a bag similar to potato chips and corn tortilla chips then easily grasped and consumed with one hand. Consumers often eat snack foods while doing other things such as driving a vehicle, using electronic devices, or watching TV. Such products need to be easily manipulated and consumable in bite sized pieces such as is possible with the finished crunchy egg product 41.
b illustrates a final product texture test setup. Food Technology Corporation supplies the Three Point Bend test apparatus illustrated in
c illustrates a final product texture test completion. During the test the plunger is slowly actuated downward as an actuated plunger 49a to come in contact with the finished crunchy egg product 41 and continues slowly downward. When a maximum angular bend is exerted onto the cracker from the actuated plunger 49a the finished crunchy egg product 41 snaps into two (or more) pieces of a fractured finished crunchy egg cracker product 41a separated by an egg product fracture 53. The fracture of the cracker is audible to a human ear (not shown) and sensed and recorded by the microphone. The current product is similar to prior art chip, and cracker snack foods in that when fractured it has an audible “crack” sound. Additionally, The current product is similar to prior art chip and cracker products in that its brittle nature allows for less than a two degree angular bend before a fracture appears. The Three Point Bend test contrasts the prior art high egg composition products that do not fracture at less than two degrees of angular bend. The Three Point Bend test contrasts the prior art high egg composition products that do not produce an audible crack sound when fractured under angular stress. Depending upon manufacturing quality controls, some product variability can occur whereby an angular bend up to ten degrees may be demonstrated before fracture in the Three Point Bend test.
a illustrates an alternate raw batter deposition step. An alternate cookware 23a is manufactured of a material suitable for microwave use and oven use and comprises a series of depressions including a depression mold 55 suitable for receiving raw egg depositions of individual chips. Once the alternate cookware 23a is oiled similarly to
Whereas the ingredients and steps described above under
b illustrates extrusion deposition of whipped raw egg batter. Whereas the ingredients and steps described above under
The puffed egg product takes advantage of the changes that raw eggs undergo when whipped, thus during mixing the raw egg batter is whipped instead of being stirred also the initial ingredients are changed to optimize the whipping consistency change. The ingredient mixing module 27 whips ingredients in the following proportions, a half cup of liquid egg white and two tablespoons of dried egg white. After whipping, the raw egg batter is heavily aerated and clings to an upside down spoon, the whipping essentially mixes air as an ingredient into the batter. A raw egg extrusion deposition apparatus 29c deposits the whipped batter onto the cookware 23 as a raw egg extrusion 57. The raw egg extrusion deposition apparatus 29c including (as previously discussed) valves and pumps that are computer programmable to deposit three and a half mm diameter three inch long light airy cylinders onto the cookware 23 which after cooking two minutes in the microwave will form crunchy seven mm diameter cylinders distorted into random shapes.
The crunchy egg puff product receives the additive step of
c illustrates an alternate crisping and drying cooking step. As discussed above, the product can be solidified, cooked and crisped in a single step or in multiple steps to optimize quality and desirable characteristics. Use of a microwave and an oven have been described above. A flyer 23b is a good alternative mechanism to drive water out of the product and cause it to crispin to achieve the desired brittle texture, moisture, sound, and fracture characteristics that can be verified in a Three Point Bend test. Frying can be substituted for baking or for microwaving wherein hot oil comprises an alternate crisping module 37a. Fryers are available from commercial food manufacturing equipment suppliers. Fried products can cause the solidifying, heating, drying, and crisping transitions discussed above so as to achieve the tan/brown color, audible sound, angular bend brittleness, and fracture characteristics that define a crunchy snack food as discussed in
a illustrates the crunchy egg product shapes and texture of the products of
During a puffed egg product test a puff test second alternate actuated plunger 49c is slowly actuated downward to come in contact with the crunchy egg puff product 65 and continues slowly downward. Whereas in the above Three Point Bend tests, the product broke into two or more pieces, the fractured crunchy egg puff 65a crushes with an audible cracking sound but doesn't initially break into pieces. When a maximum angular bend is exerted onto the surface of the puff its top surface fractures but the entire product doesn't initially fracture. The wall crush fracture is audible to a human ear (not shown) and sensed and recorded by the microphone. The current puff product is similar to prior art puffed snack foods in that when its surface is fractured it has an audible “crack” sound. Additionally, the current product is similar to prior art chip and cracker products in that its brittle nature allows for less than two degrees of angular bend before a wall fracture occurs. The Three Point Bend test contrasts the prior art high egg composition products that do not fracture at two degrees or less angular bend. The Three Point Bend test contrasts the prior art high egg composition products that do not produce an audible crack sound when fractured under angular stress. While the wall fracture will consistent occur with less than two degrees of angular bend product variability creates the possibility that fracture occurs between zero degrees and ten degrees of angular bend. Moisture content of the final crunchy puffed egg product is two percent but a variability is possible such that moisture is between zero percent and ten percent in the final product.
b illustrates a tortilla chip shaped solidified egg product before and after crisping in the microwave. Ingredients are combined as above in proportion to the following, a half cup of water and two tablespoons of dried egg white. Oil is deposited on cookware as in
c illustrates a variety of larger diameter egg products. A round tortilla solidified egg 81 measures eight inches in diameter. When deposited in a 8 inch diameter depression and cooked in the processes described in
Throughout the above specifications, crunchy texture is characterized by certain definable attributes such as audible sound during fracture, angular bend limit prior to fracture (brittleness), and low water content. These differentiate a crunchy egg product from prior art products incorporating eggs as a primary ingredient.
Operation of the invention has been discussed under the above under the Detailed Description of the Invention heading and is not repeated here to avoid redundancy.
Thus the reader will see that the crunchy egg product, manufacturing apparatus, and manufacturing processes of this invention provides a well defined and desirable consumer product that is nutritious and fulfills a gap in crunchy low carbohydrate snack food product category.
While the above description describes many specifications, these should not be construed as limitations on the scope of the invention, but rather as an exemplification of a preferred embodiment thereof. Many other variations are possible.
The egg ingredient herein can comprise whole egg or any egg product derived there from including glucose reduced dried egg or glucose reduced dried egg white.
It should be noted that the phrase “raw egg batter” is used herein to distinguish between the batter, solidified egg, and crisped egg. In fact the egg portion of the batter may consist of only dried egg or dried egg white in which case no literal raw egg is utilized.
Raw egg deposition or batter deposition means placing the batter into a position for cooking for example; depositing batter onto a surface, extruding batter onto a surface, depositing batter into a fryer, extruding batter into a fryer, and extruding batter into air that is then heated or microwaved.
The term solidifying is used herein to mean transitioning of the batter from a liquid or foam state to a high moisture content solid state, solidifying is a cooking process.
The term crisping is used here to mean transitioning of the solidified egg into a low moisture crunchy product. Crisping is a cooking process and/or a drying process.
Ingredients are mixed together herein, whipping is a specialized form of mixing that may for example mean mixing air or other gases into the raw egg or the batter to achieve certain properties suitable for the crunchy puffed egg product for example.
Spraying onto the solidified egg is described as a color, flavoring, texture, or oil additive step. Other additive steps are possible such as sprinkling onto the solidified egg, and tumbling the solidified egg in a bath of dried or moist flavorings. Similarly the batter can receive additives through spraying, sprinkling, and tumbling and the crisped egg can receive additives through spraying, sprinkling, and tumbling.