Foods, eaten in gut-busting quantities, most favorable to production:
Bread pudding with raisins...hot from the oven: gives the classic 'burff' and aroma..on steroids. Strictly traditional. [beans don't come close]
A couple quarts of undercooked french onion soup. This is for pros only: rancider than a dug-up corpse, nukular, eye-watering, emetic-response-inducing blasts.....blevies of raw awfulness. What a hoot!
That's nothing. I used to break up marathon meetings by having gulped down a pot of split green pea soup the night before. Eventually, they got wise and didn't invite me back. Works every time!