1 c. butter
1/2 c. flour
2/3 tsp. salt
1/4 tsp. Old Bay Seafood seasoning
1 qt. half and half
2/3 c. sherry
1 lb. crabmeat

In double boiler over medium high heat melt butter and flour. Add salt, Old Bay and half and half. Stir until smooth consistency. Bring to a medium thickness, stirring constantly. Add sherry. Cook additional 3-5 minutes. Stir in crabmeat.