<<Disclaimer: Verify this information before applying it to your situation.>> <<<All the mayonnaise that I've come across has vinegar as an ingredient. Does anybody know about a brand that has an okay kind of vinegar, or no vinegar at all? Anyone have good experience with mayonnaise substitutes?>>> You may want to do a follow up check but Best Foods lists the following Mayonnaise's to be gluten free- Hellman's/Best Foods real mayonnaise Hellman's/Best Foods light reduced cal mayonnaise dressing Hellman's/Best Foods cholestoral free reduced cal mayonnaise dressing as long as I'm doing a list: also listed as gf Hellman's/Best Foods tartar sauce Hellman's/Best Foods Dijonnaise creamy mustard blend for more info call Best Foods 800-338-8831 Also, be careful with tuna in water as most tuna in water has a bunch of other ingredients that are questionable (yes, I swear- go read the label) I use Bumble Bee Chunk White Tuna in Water- Diet Low salt The only ingredients are tuna and water- that's all! Use some homemade bread or toast with the tuna and the mayo above and you'll toss that dry tuna and rice crackers so fast..... Best Regards, Leslie- NYC