Left it going all night, there was about 6" left this morning so we resurrected it in the vain hope that @oscar might catch some fish for breakfast. Sadly we'd have had to burn half the New Forest before that happened.
I think we have proof to the contrary. After an entire day's fishing, all @oscar had caught was some weed (not the good kind) Exactly 3 minutes after turning up, Daniel (son of @hibiscrub), a boy of 12 managed this.... Not enough for dinner but a 100% improvement on someone's efforts! And he was using your sweetcorn!