Haven't tried the mushrooms yet. I love a big pot of royal reds.

I put enough water to cover the potatoes corn and conecuh. Put about a tablespoon of white vinegar and some old bay seasoning. I bring it to a boil and boil until the potatoes ore done. Throw in the shrimp and bring back to a boil. As soon as it starts to boil again I turn the fire off and let sit about 5-10 min.