Australians eat lamb cutlets battered with egg yolk and breadcrumbs. The proteins and lecithin in the egg yolk serve as emulsifiers in mayonnaise. It is made with brewed coffee, chicken egg yolk, and condensed milk. Some schools of egg tempera use various mixtures of egg yolk and water. Lutein is the most abundant pigment in egg yolk. When mixed with egg yolk it turns green-grey. B6 helps prevent dandruff and can be found in cereals, egg yolk and liver. Antigens are also injected into chickens for generation of polyclonal antibodies in egg yolk. Immediately after hatching, turtles are dependent on egg yolk material for sustenance. Turtle eggs prepared to eat consist mainly of yolk. On the Baird-Parker agar with egg yolk supplement, colonies appear small and black. Small eggs with little yolk are called microlecithal. Eggs with a large yolk are called macrolecithal. This is likely facilitated by a heavier yolk in the egg providing more nutrients. There is debate over whether egg yolk presents a health risk.