Butterfly Bakery Guster Gustard Mustard (8 OZ) is $6.99 at CBC Liquors, Westford in Massachusetts — in stock now, with pickup and local delivery. Gustard Mustard by BUTTERFLY BAKERY GUSTER is a unique blend of mustard and gustard flavors, creating a distinct and flavorful condiment. Its rich taste profile makes it a versatile addition to various dishes.
