2 tbsp. butter
1/2 lb. cheese
1 egg, beaten
1/4 tsp. salt
Dash of cayenne pepper
1/2 tsp. prepared mustard
1/4 tsp. baking soda
1/2 c. thin cream

Melt butter in double boiler. Add cheese and stir until melted. Add beaten egg and seasonings. Add baking soda and cream. Stir constantly and when smooth and slightly thickened, pour over crackers or toast points and serve immediately.