185F. Slice onions, sauté with some oil/butter just to soften a bit. Add some beer, vacuum seal, then 185 for 24 hours. When done pour off the liquid, toss around in a pan over high heat for a minute and serve.
ETA: someone told me this technique, but I forget who. Wish I could credit them.
The pasta I use comes in a box, so if that’s what you’re using then yes. And yes, the cooking time starts when the water boils, though you may want to test for doneness a little before that (maybe a minute or so?).
I save a cup of salted pasta water too. I add a splash if I need to keep them lubricated. Otherwise it’s some sauce to mix in the pasta and serve the rest of the sauce on the side.
Depends, of course, on pasta size and quantity. If you break spaghetti, then a smaller pan will work. I have a large stainless pan that will accommodate spaghetti unbroken. You only need enough water to cover the pasta by maybe a half inch. I never measured it, so that’s a guess. Here’s a video.
I’m not a pasta guy anymore, carbohydrates doncha know, but when I cook pasta for others I use a pressure cooker. Weigh the pasta, add twice as much weight of water, high pressure for half as long as the minimum recommended cooking time on the box, rounding down if it’s an odd number. So if the box says four to five minutes, set it for two minutes, quick release when done, no draining necessary, all the water is absorbed. Of course I add salt, it’s your one and only chance to get the salt inside the pasta, but no oil.
I cook sous vide fairly often. I have two setups, an Anova I use with a big plastic container and a Hamilton Beach unit that is the size of a large slow cooker. A lid helps with evaporation, and I check on things every so often.
I’ve done 72 hour sous vide with pork roasts and just add some water once or twice throughout.