What heat & fat do you use for fried mushrooms? I like fried mushrooms with my steak.

What techniques should I use when cooking them?

What sort of fat (if required) should I use?

What heat is suggested?
I cook 'em on medium-high heat in butter until they're browned and crisped to my liking. I don't cover - that seems to result in soggier mushrooms than I prefer.