The classification of an depends on the preparation method and the desired texture of the final paste:
: A specific blend consisting of koshi-an mixed with whole sweetened beans. It is famously used in Nagoya's regional specialty, Ogura Toast , where it is paired with butter on thick-cut bread. II. Culinary Applications
An is versatile, used as both a filling and a coating in various traditional Japanese sweets (): Dorayaki (Sweet Red Bean Pancake) - RecipeTin Japan