Heat a heavy pan or cast iron skillet.
Add oil and 1/2 butter.
When almost smoking, add mushrooms.
Stir and let mushrooms brown slightly.
Add remaining 1/2 butter and garlic.
Stir quickly to heat garlic, but be careful not to let it burn.
Add white wine (caution- it will release a LOT of steam when it hits the pan).
Let wine cook down.
When liquid is fully absorbed, taste.
Add salt to taste (dont add before, the butter may make your mushrooms saltier than you realize when cooked down).
Serve warm!