Imperial Oatmeal Stout Recipe Kit - 5 Gallon All GrainImperial Oatmeal Stout All Grain Brewing Ingredients Kit Brew a hearty and delicious Imperial Oatmeal Stout with this all grain brewing ingredients kit. This kit includes all the grains, hops, and yeast you need to brew a 5 gallon batch of this classic stout. Makes 5 gallons of delicious beer. Includes all grains which have been double crushed. Includes 2 packs of US04 yeast.. For full step by step directions click here Designed to be brewed on