There is nothing that is recommended that you should eat to induce vomiting. In case you are poisoned, you should call Poison Control, or go to the emergency room and see a doctor. They will know what to do.
Drink a 16 oz glass of water with about 3 table spoons of mustard. Stir it all up and drink all down in one setting. This only works when you have the urge to vomit and nothing is coming up. This...