Fluffy White Old Fashion Frosting

My mom used to make this frosting for cakes and cupcakes when I was little. Her mother used to make it too, when she was young. I hadn't tasted it in years, but we dug up the recipe to make Halloween cupcakes.
It's a simple recipe.
Milk and flour are stirred over water until very thick.
And added to a mixture of sugar, shortening, and margarine. It creates a very stiff, yet very light and easy to work with frosting.
These are the cupcakes I decorated for a Halloween party. Food color can be added to make pretty designs. I used black sugar and black gel frosting for my designs.
This great cake tin from the 50's was found at an estate sale for only $2! It has been the perfect place to store cupcakes. It has little latches on the sides that keep the cover on tight - it can be carried by the handle.

Frosting Recipe
1 cup milk (I used almond milk - it turned out great!)
6 tablespoons flour
1 cup sugar
1/2 cup vegetable shortening
1/2 cup margarine
1 teaspoon vanilla

Mix milk and flour in the top of a double boiler, stirring constantly until very thick. Let cool.
Beat sugar, shortening, margarine and vanilla in a mixer until smooth.
Added cooled flour/milk mixture one spoonful at a time while mixing.
Beat with mixer until stiff and very smooth.

For my cupcakes, I used a regular chocolate store bought mix. I did add extra cocoa powder and some instant coffee.

Linked up to Design by Gollum's Foodie Friday.