Clean your fermentation jar with very hot, soapy water, and dry completely.
Cut the pineapple rind and flesh into small, bite-sized chunks.
Add the chunks of pineapple rind and flesh to the fermentation jar.
Press the pineapple down as best you can into the bottom of the jar.
If you want to add cinnamon flavor to the final product, break the whole cinnamon stick in half, and add it to the jar. You can also leave the cinnamon stick out.
Mix the brown sugar, water, and Kosher salt together until the sugar has completely dissolved.
Pour the liquid brine on top of the pineapple until the bits of pineapple are covered.
*Leave about 1-2 inches of unfilled space in the top of the jar.
Fill a heavy-duty plastic Ziplock sandwich bag with ½ cup of water, seal the bag, and carefully place the Ziplock bag on top of the fermenting pineapple.
*This will help keep the actual bits of pineapple submerged below the surface of the brine while the pineapple ferments. You can also use a glass or ceramic fermentation weight.
Cover the jar with a lid, and make sure to open the jar a few times each day to let the built-up gas escape.
*If you don’t open the jar several times during the fermentation process, especially during the first day or two, your jar will explode and it will make a big mess.
After roughly three or four days, strain the liquid from the pineapple, and reservethe liquid.
Store the liquid in the fridge, and consume within a few days.