Refrigerator Yeast Biscuits

Ingredients

• 2 pkg. dry yeast
• 2 c. warm water
• 3/4 c. oil
• 2 eggs, slightly beaten
• 6 generous c. flour
• 2 tsp. salt
• 3/4 c. sugar
• 1/2 stick butter
• 1 1/2 c. sugar
• 4 eggs
• 1/2 tsp. vanilla
• 2 oz. powdered milk (1 c. + 3 Tbsp.)
• 1 1/4 oz. baking powder (2 Tbsp. + 1 tsp.)
• 20 1/2 oz. cake flour (about 5 c.)
• 11 1/2 oz. ice water (almost 1 1/2 c.)
• pinch of salt
• 2 1/2 c. blueberries