Fermenting 001 at 46 F.
You will get either:
- Nothing because it is too cold for the yeast to get started.
- High FG. The yeasts starts off, and keeps going thru active fermentation due to its own generated heat, once it starts to slow down it will cool and drop out of suspension.
If it were me, I'd get it started at room temp, place in cooler (maybe even before active fermentation has started), and then remove once again as it starts to slow down.