Hello! Welcome to Beyond Soy!
Once we figured out that Ashley was soy intolerant, we started finding soy in all sorts of food. Did you know that tuna fish has soy in it? Who would have thought? Tuna salad is one of our go-to summer meals, and we had no idea that it contained soy.
As it turns out, tuna is cooked before it is canned (or packaged). The broth used during cooking is often vegetable broth (soybean oil based), because it is the cheapest broth available. We had no idea that tuna contained soy until we started reading the ingredient labels of everything that we bought. The good news is that we have found a couple varieties of soy-free tuna (cooked with olive oil), but it has taught us that we need to make sure to read the ingredient label every time to confirm that the oil hasn't changed. (just like with mayonnaise, we read the ingredients every time to make sure that "cooked in olive oil" means cooked only in olive oil.)
In this case, we were able to find soy-free tuna and can keep eating like we did before becoming soy-free. But it doesn't always end up this way: Sometimes we find soy in surprising places (e.g., boxed cake mix) that doesn't seem to have a soy-free option and have to figure something else out (i.e., making cake from scratch).