Anyway, after a lot of time and work, I concluded that you can in fact make perfectly good cannabutter from sativa leaves. The most interesting part was that I got the same sort of "heady high" that I get off smoking it. I always thought the effects were the same when ingesting, but apparently that isn't so.
sativa is cannabis too lol of course it can make brownies, but its good to know the high is different, now i gotta go make some brownies, two batches i think