Make-ahead: mix and knead the dough, then refrigerate it overnight in place of the first rise and let the bowl sit out for 45 minutes before you roll.
Storage: keep glazed donuts in an airtight container at room temperature for up to 2 days. Freeze unglazed rings up to 2 months, reheat from frozen at 300 degrees for 6 to 8 minutes, then glaze while warm.
Substitutions: active dry yeast works in the same quantity, but give it 10 minutes in the warm water and add about 20 minutes to the first rise. Bread flour makes a chewier ring than all-purpose does.
Doneness: both faces should be mid-golden with a pale band around the equator, and a finished ring feels almost weightless in the tongs.
Nutrition values are an estimate.