Make the cocktail according to the recipe directions. Pour into a shallow clean plastic container, seal, and label. Freeze until solid OR freeze until almost solid.
If you’ve frozen the mixture until it’s solid, you will want to let it defrost slightly in the fridge or on the counter, until the middle is still pretty frozen, but the sides around the center are fairly soft. If you’ve only frozen the mixture until partially frozen, proceed to step three.
Pour that red wonderfulness into a blender and blend that puppy on up. Pour into 8 glasses and serve with straws.