Certified gluten-free. Taste that can't be tamed. Made in wisconsin. Enjoyed everywhere. This is the culmination of 120 years worth of fine mustard-making tradition. Inside is over a century of experienced, the finest ingredients, generations of expertise and, of course, really really good mustard. This is bold at its best. Koopsmustard.com. Product of usa. country of origin : united states is gluten free : yes is kosher : yes size : 12 oz pack of : 12 selling unit : case ingredients : vinegar;water;mustard seed;salt;horseradish powder;red pepper