I've been known to polish off entire jars of kimchi in record time, so when I first heard of kimchi's leek-based cousin, my curiosity was piqued.

Each year, I make as many batches of sauerkraut and kimchi and various other lacto-fermented veggies as I can muster, with all kinds of variations on the themes. It can get rather experimental, as were this fall's lacto-pickled kohlrabi and eggplant (the first was delicious, the latter not so much). But until I read a beautiful feature on leekchi in Taproot Magazine, I had never thought of experimenting with leeks. It was a revelation.

My friend beat me to it last summer and then generously shared a jar of her homemade leekchi. I ate it on everything for days on end until the sad day came when I peered into the jar and realized it was all gone.

So this year, I vowed to make leekchi in large enough quantities to keep myself well stocked for as long as possible. I just can't seem to tire of the stuff. I eat it with scrambled eggs, on toast, on cheese and crackers, in sandwiches, next to rice, I've put it in soups, stir-fry's, and wheat berry salads. It adds indescribable salty spicy umami goodness to every dish I've used it in.

We could all use a little more facto-fermented foods in our diets. In the last few years, a growing body of research is showing the incredible benefits of increasing our friendly gut bacteria. Eating fermented foods (such a yoghurt, kefir, sauerkraut, and yes, leekchi!) has been shown to help our digestion, reduce our risks of diseases like cancer, and even improve our emotional health! And while it may seem like a far-fetched claim to say that fermented foods can reduce our anxiety and boost our moods, that claim is now being backed up by scientific research.

People of different cultures around the world have been eating fermented foods for eons. The bottomline is, we need lots of friendly bacteria in our gut in order to have good overall health, and in our current era of uber-cleanliness, heavy antibiotic use, and pesticide residues, our poor little gut bacteria are constantly under attack.

I won't go into all the specifics of lacto-fermentation because entire books and websites are devoted to the topic, but I do want to say that there are many, many different techniques and vessels that will yield successful ferments. There is even a fair bit of controversy surrounding which method is best. Bottomline is, so long as vegetables are submerged under liquid in an oxygen-free environment, successful fermentation should occur. This article goes over some of the ways to ensure submersion. You can use a traditional crock and weights or a simple mason jar (loosening the lid every day to "burp" the jar and allow the gases to escape). These methods will sometimes produce a thin layer of mould on top that is harmless but should be skimmed off the surface. I've always been a bit turned off by the potential of mold, so I recommend using an airlock system, such as Pickl-it or Go Ferment. A cheaper option is to use clamp-down jars with rubber gaskets and metal clasps, such as Fido or LeParfait. The clamp-down jars do pose a small risk of shattering from the build-up of gases and pressure and though this has never happened to me or anyone I know who uses this technique, I've heard it does occasionally happen and it sounds pretty scary. When I use this method, I wrap my jars in towels and tuck them in a closed cardboard box in a closet for the active fermentation part, as a precautionary measure.

I love this type of food preservation because unlike canning, you don't need to sterilize your jars or worry about botulism. Of course, jars, hands, and tools should be clean. But through the fermentation process, the friendly bacteria crowds out any harmful bacteria. The general rule is that if your ferment has gone bad, it will have an unmistakable foul odor that will make you not want to eat it. If you're new to the adventures of fermenting, you should definitely read up on it in more detail before trying this recipe out. A good place to start is the video on fermentista.us by Kirsten and Christopher Shockey whose Leekchi recipe mine is based on. They have also written an outstanding book called Fermented Vegetables. I also recommend listening to renowned expert Sandor Katz (aka Sandor Kraut!) explain fermentation in this video. I highly recommend his books as well.

This recipe was originally posted on PBS Food.