AFAIK, the yeasties will eat lots of stuff, including flour, etc. [I vaguely recall adding not sugar, but corn starch to warm water to get the yeast going. It

AFAIK, the yeasties will eat lots of stuff, including flour, etc. [I vaguely recall adding not sugar, but corn starch to warm water to get the yeast going. It's been a long time though ...]