Exploring with fish and dishwashers (food)

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I've seen a few recipes that has stated you can wrap salmon or another piece of fish up in a tinfoil pouch with pepper salt and lemon. After that put it in the dishwasher for a normal load and when you take it out you should be able to eat the fish no problem. Personally i think this is a nifty idea also can do the same by cooking it in a car. Just place the pouch in a hot spot by the motor and after a few clicks (number changes) presto it'll be done. Has anyone tried this? / What are you're thoughts?