This very tart sourdough Pullman loaf gets its hue from Purple Haze starter. Made with whole-grain brown rice, oat flour and coarse buckwheat meal, it's a pleasure to taste, a delight to chew, and a star sandwich performer.

Yield: one, 18-ounce Pullman loaf.

Time to make: 20 minutes active. 6 - 12 hours proof (depending on temperature). 90 minutes baking.