1. Shell and clean shrimp; rinse well in cold water. Drain well. Heat one and one-half tablespoons of the butter in a heavy 10-inch skillet. Saute shrimp one and one-half minutes over medium-high heat. Remove from pan with slotted spoon.

2. Add remaining one and one-half tablespoons butter to pan drippings. Add shallots and mushrooms and saute 2-3 minutes, or until shallots are softened.

3. Stir in wine and mustard. Cook over moderately high heat until liquid is reduced by half. Stir in cream, salt and pepper. Return shrimp to sauce and continue cooking for about 2 minutes over medium-high heat, or until shrimp are completely cooked and sauce has thickened slightly.

    Serve immediately over fluffy white enriched rice. It's important that the rice be relatively bland so as not to clash with the richly flavored shrimp sauce.