Just get yourself some shrimp, scallops, crab, lobster, whatever. Remove from shell and put in a gallon ziploc bag with garlic, good butter, some garlic, and a squeeze of lemon. If you don’t have a vacuum sealer just leave a corner of the bag unzipped and submerge it to push excess air out then seal it. Make sure the seafood in the bag is submerged in the water. I usually use a clip on the side of the pot to hold it in place. Set the sous vide for 140-145 degrees and let it cook for an hour. Ready to eat. It will be quite rich so serve it over some filler like pasta or veggies or something.