diastatic malt powder
in los angeles, even in bulk?
You could always check with Surfas in Culver City. They seem a likely place to have it.
Surfas Restaurant & Supply
8777 Washington Blvd, Culver City, CA 90232
Buried in the above topics is this place where the Maltose Falcons meet. If they're close enough, give them a call.
The Home Wine, Beer, and Cheesemaking Shop
22836 Ventura Blvd 2, Woodland Hills, CA 91364