I've been baking my way through Tartine Book No. 3, making some amazing loaves of bread. There's a whole section on porridge breads (I've enjoyed making the oat porridge bread). Some others are porridges made from barley flakes, rye flakes, kamut flakes, and farro flakes. Does anyone know where I can find these? Whole Foods doesn't seem to have them. The huge supply of Bobs Red Mill at Ocean State Job Lot also is negative. Thoughts?