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It is somewhat fascinating how much the tech community seems to strive to try to solve non-problems. In this case, poaching or hard boiling an egg is so utterly simple, done in mere minutes, that it is simply impossible that this device could make it easier. And the grotesque proposed waste of energy borders on the absurd. And then, after you've had your perfectly cooked eggs that you presumably had to hop out of bed…
Hard-boiling an egg is trivial. Soft-boiling an egg, or making a perfect poached egg, is non-trivial; it's a finesse task. And doing it once or twice is one thing, but plating 10-20 for a bunch is another. Also: your definition of "a perfect steak" is different from mine. You either like a little overcooked steak or a little undercooked steak (or maybe a lot of either), because you can't get uniform doneness in a cas…
Where the sous vide shines I think is for cheap cuts such as pork belly or tougher game meat where you just can't simply sear until done but actually have to break down the meat overnight at target temp. Another perfect use is charcoal grilling for many people. Just throw a huge steak in the sous vide in the morning. Throw it on charcoal when guests arrive just for the flavor.