Frances' Butterscotch Pie
["1 c. brown sugar", "3 Tbsp. butter or margarine", "4 Tbsp. cream (evaporated milk)", "1 c. evaporated milk", "6 level Tbsp. plain flour", "1 egg yolk"]
["Mix in a pan the brown sugar, margarine and 4 tablespoons \"cream\".", "Cook this mixture until thick and brown."]
["brown sugar", "butter", "cream", "milk", "level", "egg yolk"]