I'm currently making my first homebrew - a ginger beer using this kit and recipe. It's finished primary fermentation (hopefully, the cold weather has me concerned), and I've just bottled it for carbonation. My question is, should I have included the dregs from the primary fermentation jug in the bottles? The recipe says not to shake the jug while bottling, which I took to mean that the dregs weren't meant to be included.
No. The settled yeast (trub/dregs) from primary shouldn't be included in bottling. There's plenty of yeast in suspension to bottle condition, unless your cold weather was enough to completely crash and fine in primary. But that would need to be below 40°F for a couple days.