General tips
The #1 mistake with sous vide beans is treating them like the stovetop and adding salt early. Sous vide already gives you total temperature control, so the salt actually helps season evenly without slowing down hydration. Skip the soak, add salt with the aromatics, and let the bath do the work.
Use a heavy zip-top bag with the water-displacement method instead of a vacuum sealer for beans. The starches expand and a vacuum seal can crush them or split skins before they're tender. A bath of 194°F for 6–8 h gives you creamy interiors with skins still intact.
Aromatics matter more here than they do for steak. Toss in a smashed garlic clove, a bay leaf, a strip of kombu, or a parmesan rind in the bag. The bath holds those flavors against the beans for hours and you'll taste it in every bite.
Don't dump the cooking liquid. That bean broth is the most flavorful thing in your kitchen - it's pure pot likker. Save it for soups, risotto, polenta, or to thin out a hummus. Better than chicken stock for vegetarian cooking.
Anti-tip: don't try to rescue old, stale beans with sous vide. If they've been sitting in the pantry for two years, even a 12-hour bath won't fully soften them. Buy fresh-crop dried beans from a high-turnover bulk bin.
Al Dente tips
Season the soaking water with 1% salt to help beans cook evenly without splitting.
Add a strip of kombu or bay leaf to the bag for subtle umami.
Rapidly cool beans if using in salads so they retain a tender bite.
Soft tips
Keep beans submerged in plenty of liquid so they cook evenly.
Mash with a ladle inside the bag before draining if you’re making dips or refried beans.
Save the thick bean liquor for soups or to cook grains.