<<Disclaimer: Verify this information before applying it to your situation.>> In response to the gf tuna postings, I contacted StarKist again in an effort to obtain more info re the ingredients in thier tuna in water (which we all know contains more than water). Their representative said that the vegetable broth contains at least 2 of the following dehydrated vegetables : beans, cabbage, celery, carrots, garlic, onions, peas, parsley, green or red peppers. It is rehydrated, she said, with water only. As per some of your suspicions, the hydrolized casein is made from a "dairy derivative" (that's as specific an answer as I could get). This info made me rethink this product, since cabbage is something that definitely does not agree with me, and there's no way to know which vegetables are in the can you buy, so the vegetable broth may not be friendly to my gut. The representative told me that if I wanted ONLY tuna and water, I should purchase their low fat/low sodium tuna, which contains only those ingredients. I'm new at this, but I guess I'm learning fast to ask more specific questions! I'm enjoying sharing with all of you-- your postings and the wealth of info I've obtained in the past few weeks has made understanding and adjusting to this diet so much easier. Ann