I've been collecting bottle dregs for the last 3 months all from sour, funky, brett and lambics. I fed them a low gravity meal last week. I thought it was interesting to see to distinct layers of which I'm guessing the larger one on the bottom is Sachromyces and the top layer is everything else. I wonder how much Lactobacillus could have survived? I'm going to pitch it this weekend and see what happens!