<<Disclaimer: Verify this information before applying it to your situation.>> Though the telephone number on their label I was able to contact Hellman's. They have informed me that their mayonaise in gf . The vinegar is made from corn. They also offered to send me a list of their gf products. I accepted. I was very pleased with the response that I got on the phone. The first person I talked to immediately knew what I was talking about and was pleasant and helpful.