It is caused by the reflectance of light off of muscle proteins, and it is analogous to the color distribution produced by a prism. Muscle proteins are arranged in strands called myofilaments, which are bound together to form myofibrils. Myofibrils are bound together to form muscle fibers, which form together to form muscle bundles and finally whole muscles. When the myofilaments are cut at the appropriate angle, exposing a cross section of the myofilaments, the reflectance of light off the proteins produces the characteristic appearance associated with iridescence.

Iridescent Color of Roast Beef
Sliced cooked beef or lunch meat can have an iridescent color. Meat contains iron, fat, and many other compounds. When light hits a slice of meat, it splits into colors like a rainbow. There are also various pigments in meat compounds which can give it an iridescent or greenish cast when exposed to heat and processing. Iridescent beef isn't spoiled necessarily. Spoiled cooked beef would probably also be slimy or sticky and have an off-odor.

Patent JPH08275731A: White Cedar Ice Cream
PURPOSE: To enable sales of an ice cream in different types of industries such as the lumber industry and the paper-manufacturing industry, to promote activation of enterprises and to sell the ice cream as a prescribed commodity as a local product by combining white ceder as a tree with ice cream to develop an epoch-making food.
CONSTITUTION: This ice cream is obtained by mixing a naturally extracted edible white ceder spice with an ice cream, mixing a pie dough with an edible white ceder spice, baking the mixture to give a pie, grinding the pie and mixing the flour with an ice cream or combining these ice creams with a designed cake forming a leaf or a twig of white ceder.

JPH06233656A: Sunflower Ice Cream
PURPOSE: To obtain an ice cream of sunflower as a local product.
CONSTITUTION: An ice cream base comprising honey of sunflower is mixed with a sunflower paste prepared by making seeds of sunflower into a paste to give an ice cream. The ice cream is topped with a material obtained by mixing seeds of sunflower roasted by an oven with caramel to give the objective ice cream of sunflower.

JPH11137180A: Salmon Ice Cream
PROBLEM TO BE SOLVED: To obtain salmon-contg. ice cream by mixing salmon in ice cream, and to provide a method for producing the above dessert, intended to offer a new commodity using salmon in the districts noted therefor and accomplished by proposing a technology to lower the freezing temperature of salmon and a second technology to remove the fishy smell inherent in salmon.
SOLUTION: This salmon-contg. ice cream is obtained by mixing salmon flesh boiled with alcohol during ice cream production process followed by chilling (freezing) the resultant mixture.

JPH06217700A: Chinese noodle seasoned with miso ice cream
PURPOSE: To provide a tasty ice cream-based Chinese noodle seasoned with miso intended to activate the relevant market as well as furnish consumers with joyfulness.
CONSTITUTION: Raw noodles are boiled with cow milk and then put into chilled cow milk and cooled. The resultant cooled noodles are boiled with a liquor comprising 80wt.% alcohol, 10wt.% miso and 10wt.% pig bone soup and infiltrated with the alcohol followed by cooling again. The resultant noodles are mixed with an ice cream base which has been separately prepared by incorporating an ice cream base with miso, followed by chilling, thus obtaining the objective ice cream-based Chinese noodles seasoned with miso.

JPH06217699A: Chinese noodle seasoned with soy ice cream
PURPOSE: To provide a tasty ice cream based Chinese noodle seasoned with soy intended to activate the relevant market as well as furnish consumers with joyfulness.
CONSTITUTION: Raw noodles are boiled with cow milk and then put into chilled cow milk and cooled. The resultant cooled noodles are boiled with a liquor comprising 80wt.% alcohol, 5wt.% of soy and 15wt.% seasoned shark fin soup and infiltrated with the alcohol followed by cooling again. The resultant noodles are mixed with an ice cream base which has been separately prepared by incorporating an ice cream base with a seasoned shark fin soup, followed by chilling, thus obtaining the objective ice cream-based Chinese noodles seasoned with soy.

JPH0998722A: Silk ice cream
PROBLEM TO BE SOLVED: To produce silk-contained ice cream perceivable by tongue and eyes that the ice cream contains silk by mixing silk, which is good for health, into ice cream and the unbaked dough of pie, and further spraying silk powder over the baked pie to lay it on the ice cream.
SOLUTION: Silk powder is added and mixed into ice cream base commercial or originally blended which has been sterilized by heating and cooled. Pie dough is also compounded with silk powder, and it is formed into a shape of a silk worm or a cocoon and baked. The pie is placed on ice cream. Silk powder is sprayed over the pie. This enables one to clearly perceive that the pie has silk and to directly taste the silk powder.

JPH08277399A: Cypress flavor for food
PURPOSE: To obtain a cypress flavor for food, having excellent deliciousness, taste and palatability and useful for the preparation of a cake, etc., by adding water to cypress wood chips, heating the chips to distill out a liquid component and removing the water from the liquid by evaporation.
CONSTITUTION: This cypress flavor is produced by adding water to cypress wood chips preferably mixed with false arborvitae wood chips, heating the chips to distill out a liquid component and removing water from the liquid by evaporation.

JPH06233655A: Beer ice cream
PURPOSE: To obtain an ice cream of beer taste having a mellowness and pleasantness to the palate.
CONSTITUTION: The alcohol degree of beer is weakened and mixed with a fresh cream, whole powder milk and a stabilizer so as to prevent the beer from becoming a sherbet state and blended with an ice cream base to give a beer ice.

JPH06343397A: Japanese rice wine ice cream
PURPOSE: To obtain a tasty ice cream having the taste of Japanese rice wine.
CONSTITUTION: The ice cream is obtained by adding SAKE (Japanese rice wine) lees to an ice cream base composed of sugar, cow's milk, an egg, fresh cream, skim milk powder, glucose and a stabilizer and cooling the resultant mixture.

artist and philosopher, Alex Stenzel, 44, of Pacific Palisades, Calif., has developed a new kind of breadless sandwich that has taken the raw food community by storm. Stenzel's invention, known as the 'Gorilla Sandwich,' substitutes traditional sliced bread for a hollowed-out cucumber filled with kale, olives, mustard greens, walnuts and avocado - among other healthy ingredients.

The name 'Gorilla Sandwich,' according to Stenzel, was chosen after researching gorillas and discovering their diet consists of many greens that are high in protein.

"I'm very much into health," Stenzel said. "I've always been playing around with different types of herbs and different kinds of vegetables."

Stenzel, who is originally from an industrial area in Germany, came across this idea when confronted with a choice: eat his salad at home or store it inside a hollowed-out cucumber to make it portable enough to take to the beach with him. For Stenzel, who is a surfing enthusiast, the answer was obvious, and he was soon off to the beach to 'kiss the waves,' as he calls it, with his new edible invention. Stenzel also has had a world ranking for three different sports: tennis, mountain biking and the Iron Man World Championships in Hawaii in 1986.

"To reach the highest performance level possible, I experimented with different healthy diets," he said.