Dark brown sugar or piloncillo: 107 g per 1 L of water (≈ 1/2 cup per quart).Add sugar water until the pineapple is just covered, leaving 5 cm (2 in) of headspace below the lid.
Weight + submerge
Place the fermentation weight so all peels stay under the liquid.
Seal the water-seal airlock
Ferment 3–5 days (no opening)
Open once, taste, strain
Bottle for 2nd fermentation (carbonation) (1-3 days)
Transfer the strained tepache into pressure-safe bottles (swing-top bottles or a plastic soda bottles). Leave 3–5 cm of headspace.