I bought a plastic wrapped mass produced "New York Deli" subwich at Wal Mart and forgot to refrigerate it when I got home before I passed out. Many hours later when I regained consciousness I found it still laying on the counter perceptibly slumped in the humid heat of a sealed living space. I put cooled condiments on it and the effects on its flavor of what it had been through were very interesting, though the lettuce was slimy and unpleasant. This counts as cooking even if it was unintended.