Yellow Mustard. Heinz American Style Yellow Mustard is here to take centre stage with its bold, tangy flavour and velvety smooth texture. The secret ingredient that makes ordinary meals unforgettable From juicy burgers to sizzling hot dogs, and even a sneaky swirl in your potato salad, this mustard knows how to bring the zing. Heinz American Style Yellow Mustard is the flavour boost your kitchen didn't know it needed!