When leaching acorns, the ratio of water to acorns is important. Acorns are rather starchy and when they’re dry, they soak up a lot of water. I probably use more water than is necessary but I usually say 3 parts water to one part acorns. For example, if you have one cup of acorns, I recommend using at least three cups of water when you put them into the blender to leach them. That’s probably enough. It’s fine if you use more water than that. If you have several cups of acorns, only grind one cup at a time. And don’t forget to take the shells off first!
Suellen Ocean is the author of Acorns and Eat’em, a how-to vegetarian cookbook and field guide for eating acorns. Find it here: http://www.amazon.com/Acorns-Eatem-How–Vegetarian-Cookbook/dp/1491288973