Chipotle Pepper Sauce

2 tablespoons butter
2 tablespoons flour
2 cups heavy cream
1 tablespoon chicken base
3 chipotle chiles, chopped
2 ounces Monterey jack cheese
1 cup sour cream

Melt the butter in a saucepan; add flour and stir for 1 minute. Add cream and chicken base and stir until the mixture thickens. Add chiles and cheese. Stir until the cheese melts. Remove from heat. When the boiling stops, fold in the sour cream.