Crab Pot Inn Crab Bisque

2 tablespoons butter 
1/4 cup diced onion 
1/2 cup diced celery 
1 pound fresh jumbo lump crab meat 
1 tablespoon Old Bay Seafood Seasoning 
1/4 pound cheddar cheese, shredded 
1/4 pound diced fresh shrimp 
1/4 pound fresh chopped mushrooms 
1 teaspoon parsley 
1 1/2 cups milk 
1/2 cup sherry 

Melt butter and saute 1/2 cup diced onion and 1/2 cup 
diced celery in skillet and add the remaining ingredients. 
Simmer until steaming. 
Serves 6 to 8.