For some reason I didn’t think one could ferment potatoes because one doesn’t eat them raw. Then I challenged myself, did some research and lo and behold, lots of people are fermenting potatoes. So I thought I’d give it a try; total success! I tossed the fermented spuds in olive oil, salt and rosemary and roasted them. They were delicious, had an interesting tang and were chewy! Give it a try with any potato, including sweet potatoes.
Ingredients and Materials
3-4 potatoes of any kind or color
Brine; 2 tablespoons of salt dissolved in 2 cups of water
Sharp knife, cutting board and a glass jar with a lid. I used a regular quart-sized mason jar.
Technique
Cut the potatoes into any shape you desire - chunks or rounds, and fill your jar about 3/4 - 4/5 full. Pour the brine on top to cover by about an inch so the potatoes are submerged. They may float a little, push them down. If they stubbornly persist in floating, you can weight them down with a clean weight, some people pass a lovely stone through the dishwasher to have on hand for such eventualities.
Mold will eventually form on any vegetable that protrudes from the fermentation surface, so do pay attention to this detail. If mold does form, or a whitish scum forms on the surface of the liquid, not to worry. Rescue any floating weirdly-affected vegetable piece, wash it off if it’s still firm, and put it back in. Skim the surface, blot it with a paper towel and wipe around the top interior edge and surface of the jar to decrease the less-desirable microbe load. Give up on getting it all - you are vastly outnumbered, your job is to keep the majority underwater happy. The brine and increasing acidity will do the remaining work.
Put the jar of brined potatoes (lid on loosely to avoid large contaminants) in a cupboard out of direct sunlight. Examine it every morning, and push the vegetables underwater if things start to float. Remember that CO2 is being released during the fermentation and will create bouyancy.
Wait 3-4 days, then drain and rinse the potatoes, and use them as you would in any potato recipe. I roast them, put them in soup, etc.
Sweet, red and yellow potatoes in brine. And now we wait…