Place the corned beef in a container with a lid. Add the black peppercorns, mustard seeds, coriander seeds, bay leaves, garlic, onion, apple cider vinegar, brown sugar, and water.
Place the container in a sous vide cooker and set the temperature to 140 degrees Fahrenheit.
Cook for 1.5 hours.
Remove the container from the sous vide cooker and let it cool for 10 minutes.
Slice the corned beef and enjoy!
Interesting Facts
Corned beef is a classic dish of the Irish-American culture.
Sous vide is a French cooking technique that uses temperature-controlled water baths to cook food in a sealed pouch.
The name “corned beef” comes from the large chunks of salt that were used to cure the beef, which were called “corns” of salt.