Boiled Peanuts, Slow Cooker

⭐ The method I worked out for myself and the one I actually use. Traditionally boiled peanuts are done outside in a 20–30 gallon pot on a turkey fryer stand, which is wonderful and completely impractical on a Tuesday. A large crock pot holds about 2 lb and asks almost nothing of you.

It takes longer than the stove — about twelve hours against four or five — and the long gentle cook actually produces a slightly better texture than a hard boil: fewer blown shells and more even kernels. Start it after dinner and they are ready for breakfast.

Ingredients

• 2 lb raw peanuts in the shell
• 1/2 cup kosher salt, or up to 3/4 cup for a saltier batch

Water to fill the crock

• Optional: 1 halved orange, 2 halved garlic heads, or a bag of crab boil

Directions

Key ingredients

Salt

1. Rinse — Wash the peanuts under cold water. If they are dried raw peanuts, soaking them overnight first will take two or three hours off the cook, but it is not essential in a slow cooker — you have the time anyway.
2. Fill the crock — Peanuts, salt and any aromatics into a large slow cooker, then water to within an inch of the rim. A large crock pot holds about 2 lb of peanuts and no more — they need room to move.
3. Keep them under the water — Peanuts float, all of them, the whole time, and the ones on top do not cook. Weigh them down with a plate, a heavy lid or a steamer basket. An unweighted pot gives you a batch that is one third done, one third close and one third raw, and there is no fixing it afterwards. Top up with BOILING water as the level drops — cold water stalls the pot.
4. Cook on high, about 12 hours — Overnight is perfect. Check every hour or two and top up the water — that is the only real chore, and a crock that boils dry will scorch the peanuts at the bottom.
5. How to tell they are done — Forget the clock and use two physical tests. The shell should be soft and yield to a squeeze rather than cracking. And a shelled kernel should be creamy all the way through with no snap or chalk at the centre — the texture of a cooked butter bean. There is no visual cue from outside the pot; you have to eat one, then eat another one twenty minutes later.
6. The steep is not optional — When the kernels go creamy, turn the heat OFF and leave the peanuts in the liquid — one hour minimum, until the pot reaches room temperature is better, overnight is best. Salt diffuses through shell, skin and kernel slowly, and most of the seasoning arrives after the heat stops. A batch tasted straight off the fire always seems under-salted; the same batch four hours later is right. This is why adding salt at the end of the boil is nearly always a mistake — you have not tasted the finished product yet.
7. Turning it off — Once they are done, switch the cooker off and leave the peanuts in the liquid to cool in the crock. The residual heat means the steep happens slowly, which is exactly what you want.

Notes

Why it works better than it should. A slow cooker never gets to a rolling boil, so the shells are not being battered for twelve hours. You lose fewer of them, and the kernels cook more evenly because there is no hot spot at the base.

On the Instant Pot instead. Pressure-cook 75–80 minutes with a 5-minute natural release, then manual release. Fast, but it skips the steep, which is where the salt arrives — let them sit in the liquid an hour afterwards or they taste flat. And note that an Instant Pot is a pressure COOKER, not a pressure canner; it cannot be used to can them.

Keeping them. Boiled peanuts are a wet, cooked, LOW-ACID food with no acid and no ferment — they are not a pickle and nothing in them preserves them. Refrigerate within two hours of the pot coming off the heat and eat within about four days, stored in their brine. They freeze extremely well in their liquid. To can them you need a PRESSURE canner and the tested process — never a boiling-water bath, and never an Instant Pot, which is a pressure cooker and not a pressure canner.