Buffalo Frozen Omasum AA likely refers to a specific grade or quality classification of omasum, which is the third stomach compartment in the digestive system of a buffalo. The "AA" designation could signify a particular grade or size, often used in the meat industry to categorize products based on quality or characteristics.

In culinary terms, frozen omasum from buffalo is a meat product that has been preserved by freezing. Omasum is used in various cuisines, especially in certain Asian dishes. The "AA" grade might indicate a higher quality or larger size of the omasum.