Lineage: Thin Mintz X Dj Short Blueberry A cruffin is a hybrid of a croissant and a muffin. Our Cruffin is none of that, and it’s also not that Blue Sherbet x Zkittles cross that’s billed as “Blueberry Cruffin” on the interwebs. Ours is a different beast, a cross of Thin Mintz x DJ Short Blueberry.