Add the pineapple skins, spices, ginger, sugar, and turmeric to a large jar
Cover with boiled water that's been cooled to room temp, making sure everything is submerged
Seal loosely (or cover with cling wrap + small holes) so it can breathe
Leave to ferment in a cool, dry place for 5 days, giving it a gentle shake each day
Strain, chill, and serve over ice – top with soda or add tequila if desired
