SF is known for sourdough, but is Dutch crunch the Bay Area's signature bread? FacebookTwitterEmail Raymond Ofiesh, founder and CEO of Raymond's Sourdough Bread, holds freshly baked Dutch crunch bread at his bakery outlet in South San Francisco, Calif., on Thursday, April 15, 2021.Marissa Leshnov / Special to SFGATE “A thin, even layer is better than a thick one,” I repeat to myself as I gently run the back of a spoon across the fluffy round of dough to even out the gloopy paste. I mildly panic when some of it slowly runs onto the parchment paper and I leap dramatically across the kitchen for a paper towel to aid in clean up.