I'd appreciate some ideas/suggestions on how to handle situations like this. We've had a couple less-than-good experiences recently and don't know who to hold responsible.
When someone has a relatively minor food allergy, tells the wait staff before ordering, but then still receives a meal with the problem item, what should we do?
My wife doesn't get along with tomatoes - not a life-threatening situation, just significant gastric unhappiness can result. We always tell the wait staff about the issue and usually have no further concern. Sometimes, however, the meal arrives with tomato garnish, roasted tomatoes included in a vegetable medley, or sliced tomatoes on top of a salad.
The issue is that dishes are frequently delivered by runners, not the person who took the order - so who dropped the ball? Was our request not written down, did the chef ignore it, or did the line chef not check the order before sending it out?
The issue isn't usually serious enough to send the dish back and disrupt the meal for everyone, but it does detract from a good meal.
What should we do to point out the problem when ordering and hopefully prevent it from happening again?

