What are some reasons Royal® Pie Filling may fail to thicken?
— When milk substitutes are used. The calcium in milk is essential for the setting process. — When the pudding is allowed to cool and set before pouring into a pie shell. Once the set is broken, it will not reset firmly enough for a pie. — When the pie filling is not brought to a full boil. For best results, pie filling should be stirred steadily until it comes to a full boil with bubbles breaking all over the surface. It should then be immediately poured into a cooled baked pie shell, cool for 10 minutes. Refrigerate at least 4 hours or until set (3 hours for 1 package pie). If using 2 (4–serving size) packages of pudding mix use 3 cups milk.
