I like to think of it as packed sand, because that's what I have the most experience in.
Loosen up, lean back to accelerate, lean forward to brake and corner, and maintain your balance. Riding in slippery conditions is very surgical. Deliberate and precise actions. I keep a kind of dialog in my head when it gets rough "Ok, coming up to a corner, completely slick, I need to slow down to almost nothing to make it, brake, look into to turn, clear, start my lean, stay away from that rut, making the turn, keep balance, leaning back and powering out" Not really vocalizing, just a train of thought that's running when I need to pay attention in the thick.
YMMV. Nothing beats experience.