They're used to make zabaglione

• "The ___ on you!" (classic gag line)
• "The ___ on you!" (quip after smashing an egg over someone's head)
• Cholesterol part of eggs
• They're enveloped in white
• Yellow egg parts
• They're used to make hollandaise sauce
• Runny egg parts on room service tray
• Future embryos
• Mayo ingredients

Wiktionary Word definitions in Wiktionary
n. (plural of yolk English)