<<Disclaimer: Verify this information before applying it to your situation.>> Dianne, Those are the worst situations to handle. In September, I too, was "poisoned" by some very dear friends. I'm guessing the marinade the pork tenderloin was in prior to cooking may have had soy sauce or SOMETHING in it. I DID get home before getting sick which was a trick since they live 30 miles away. I didn't want to tell them I'd been sick all the next day due to their cooking so I wrote a note to them thanking them for the nice evening and asking for the recipe since my hubby loved it so much! That way I'll know what got me and can caution them about that ingredient next time we go to dinner there! I hope this approach works as this is the first time I've run into it in such a big way! Vicki WA state