They can be used in cooking just like chicken's eggs, though they have proportionally more yolk, and this cooks to a slightly denser consistency.
en.wikipedia.org Its ingredients consist of wheat sprout, flour, egg yolks, rose water, sugar, butter or vegetable oil, saffron, cardamom and slivers of almond and pistachio.
en.wikipedia.org A heavier version of leche flan, tocino del cielo, is similar, but has significantly more egg yolks and sugar.
en.wikipedia.org This is usually what caused an egg to contain a small particle of grayish tissue instead of a yolk.
en.wikipedia.org The blastoderm begins to thin as it spreads toward the vegetal pole of the embryo until it has completely engulfed the yolk cell.
en.wikipedia.org