If so, what is in flour that makes this happen?

Begin to stir in the flour, 1 cup at a time.

His skin was so gray he looked as if he'd been rolled in flour.

Stir in flour, and cook for a few minutes; do not brown.

Stir in the flour, taking care not to over mix it.

But the concentration of the protein in the flour seemed to be far too low to cause disease.

Jill and her mother were up to their elbows in flour.

Add the garlic and cook one to two minutes, then stir in the flour.

He began at once in the flour, feed, and grain business.

Stir in the flour and cook for two to three minutes without burning.