pineapple vinegar

https://www.fermentedfoodlab.com/how-to-make-raw-pineapple-vinegar/

https://steptohealth.com/delicious-medicinal-drinks-with-pineapple-skin/

http://nourishingtime.com/naturally-fermented-pineapple-ginger-soda/

http://hugatreewithme.com/apples-pineapple-probiotic-drink/