Wikipedia
Battalia pie
In English cuisine, Battalia pie, also written Battaglia pye, is a large game pie, or occasionally a fish pie, filled with many small "blessed" pieces, beatilles, of offal, in a gravy made from meat stock flavoured with spices and lemon. The dish was described in cookery books of the 17th and 18th centuries.
Confusion with words for battle led to the pie being crenellated, or shaped to resemble a castle with towers.