Fermentation—a process in which carbohydrates are converted into alcohol or acid—is what makes delicious things like wine, beer, yogurt, kimchi, and other pickled foods. It’s a natural process that results in foods rich in probiotic bacteria, which is great for your gut microbiome. Here are three fermentation kits for people who like to DIY.

All-in-one. Amazon

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Fermentation has never been easier with this kit, which also features a bonus oxygen extractor to use during the later stages of ferment. It takes the guesswork out of how to ferment your favorite vegetables and comes with three wide mouth lids, three fermentation weights, and the oxygen extractor.

For bigger harvests or big batches. Amazon

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These handy airlock tight lids will keep your ferments mold-free, plus an integrated date setter will help you keep track of when the ferment is almost complete. This kit also features a unique pie weight system to keep your veggies continuously submerged below the brine. It comes with a recipe book, too. Just make sure to get your own jars; this kit is compatible with brands like Paksh Novelty, Pakkon, Arkansas Glass, and more.

Everything you need to ferment food. Amazon

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This kit features four airlocks, four stainless steel lids, and 8 silicone grommets. It pairs perfectly with all wide-mouth Mason jars, and is made out of lead-free, food-grade glass and BPA-free plastic. It’s a great price and makes for a beautiful gift.