+1 on the floating/grinding--i bought a handheld coffee grinder Im gonna pulverize it with next go roundI used some recently with a mead, found that 1 they float, 2 wished I'd ground them (I've since bought a morter and pestel) and used about 2oz, maybe 1.75oz for my 1 gallon of mead.
How'd the mead turn out? I have 15# of honey a friend sent me from Hawaii to make mead with....never thought about using nibs.