I just purchaced a set of sprouting screens at my co-op, and want some ideas of good grains to try. I've started some lentils as a first batch. Grains I have on hand are quinoa, lentils, barley, beans (navy and black), and flax seed. I'm especially interested in sprouting the flax, but what I've Googled has not been helpful. I'm looking for safety concerns I should know about, what the best grains to use are, and any other tips or ideas you might have. Thanks!