Yolk/jəʊk/ Definition 1 of 3Pro Tip 1/3Culinary Term The word 'yolk' is often used in cooking and baking recipes. Separate the yolks and whites before making your cake batter. Pro Tip 2/3Color Descriptor 'Yolk' can sometimes describe the color of things that are yellow, similar to egg yolk. She wore a dress the color of egg yolk. Pro Tip 3/3Non-Edible Usage Do not confuse the term with anything edible when used in non-culinary contexts. The painter mixed a yolk-colored pigment for the sunrise scene.