Answer:

GLUTEN

Answer	Crossword Clue
GLUTEN	Dough constituent
GLUTEN	Allergen found in most bread
GLUTEN	Protein in wheat products

GLUTEN	It helps dough rise
GLUTEN	Wheat protein
GLUTEN	Grain component
GLUTEN	... bread.
GLUTEN	A kind of bread.
GLUTEN	Substance found in wheat flour.
GLUTEN	Substance in wheat flour.
GLUTEN	Wheat-flour protein

GLUTEN	Substance in wheat flour
GLUTEN	Protein in bread
GLUTEN	Sticky stuff in wheat
GLUTEN	Sticky substance in wheat
GLUTEN	Type of flour
GLUTEN	Substance found in flour
GLUTEN	Dough component
GLUTEN	Kind of bread or flour

GLUTEN	"... free!" (health-food label)
GLUTEN	Flour component
GLUTEN	Celiac concern