Answer:

yolk

Answer	Crossword Clue
YOLK	Egg-white omelet's lack
YOLK	Greasy substance found in unprocessed sheep's wool
YOLK	Nourishment for an embryo

YOLK	White counterpart
YOLK	It may get separated from its surroundings
YOLK	Cholesterol provider
YOLK	Sunny side?
YOLK	Egg feature
YOLK	Egg yellow
YOLK	Part of an egg containing vitamin A
YOLK	Yellow

YOLK	Egg substance
YOLK	Sunny side in a diner
YOLK	The sun in sunny side up
YOLK	White partner
YOLK	Hollandaise ingredient
YOLK	More-caloric egg part
YOLK	Potato salad ingredient, perhaps
YOLK	Egg part

YOLK	The "sun" in "sunnyside up"
YOLK	Allemande sauce enricher
YOLK	Part of an egg
YOLK	Hollandaise sauce ingredient
YOLK	Albumen's shell-mate
YOLK	Mayonnaise component, often
YOLK	Humpty Dumpty's heart?
YOLK	"Sunny" egg part

YOLK	Egg-white neighbor
YOLK	Sunny-side-up part
YOLK	Egg segment
YOLK	It's surrounded by white
YOLK	Egg component
YOLK	Omelet component
YOLK	White's complement
YOLK	White's opposite

YOLK	Egg section
YOLK	Omelet ingredient
YOLK	Egg center
YOLK	Egg portion
YOLK	Center of an egg