I was feeding my sourdough this afternoon and saw all that golden trub sitting there and thought- why not?
I fed my sourdough and divided it in half, kinda. I put a little less in one jar and toped it off with some of the HBB trub. I tried to get the very fine middle line where the nice live yeast should be hanging out. I kinda got a little of everything with my turkey baster (yes, sanitized).
The HBB sourdough is taking off way quicker then my regular one. Every time I feed my sourdough I'm going to do this and make a bread. A Honey Bear Bourbon Bread.

Here's a picture of the reg sour dough and the HBB sour dough. The higher one on the right is the HBB. You can see it has a bit of golden color too.