Truffle Mustard: Bauer's mustard made since 1888 in Ridgewood, Queens infused with black summer truffles from northern Italy. Contains pieces of truffles. Bauer's mustard from Ridgewood, Queens pairs up with black summer truffles from northern Italy to create a mustard like no other. Whether your smothering a nice juicy bratwurst or a stacked deli sandwich, you're sure to enjoy this jar of pure deliciousness. 4 ounces.