The next time you cut up a fresh pineapple, don’t immediately discard the rough skin or the tough core. These leftover parts are actually the main ingredients for a healthy, homemade fermented beverage packed with benefits. Traditionally known in Mexico as “Tepache,” this simple drink transforms the usually discarded pineapple parts into a delicious, fizzy liquid rich in probiotics that support your digestion. Easy to make and economical, it also provides an excellent way to reduce food waste in your kitchen.
The parts to use: the skin and the core
A common question when making this beverage is whether to include the pineapple’s hard core. The answer is yes. Both the outer skin and the tough core are perfect for this process. While the soft, sweet flesh is best enjoyed fresh, the core is extremely rich in beneficial enzymes and flavors. Using both the skin and the core ensures a drink with optimal health benefits and a richer taste.
The health benefits of fermented pineapple
Drinking this natural homemade beverage offers many powerful advantages for your body:
Improved gut microbiota: The natural fermentation produces probiotics—live beneficial bacteria that help balance your digestive system by easing your stomach’s work.
Enhanced digestion and inflammation reduction: Pineapple skin and core are rich in bromelain, an enzyme that helps break down proteins and naturally reduces swelling and inflammation in the body.
Immune system boost: Pineapple is an excellent source of vitamin C. Even using only the skin, some of this protective vitamin transfers into the drink.
Healthy hydration: This fizzy beverage offers a low-sugar alternative to commercial sodas, providing a refreshing drink free from artificial additives.
Materials and ingredients needed
The skin and core of a whole, ripe, and large pineapple
1 cup of brown sugar or raw cane sugar (good bacteria need sugar to feed and multiply)
8 cups of clean, filtered water
Optional: 1 cinnamon stick and 3 whole cloves for flavoring
A large glass pitcher or wide-mouth jar
Step-by-step recipe
Clean carefully: Rinse the whole pineapple under running water. Scrub the skin with a vegetable brush to remove any dirt.
Cut the fruit: Remove the outer skin and cut the hard core. Reserve the sweet flesh for fresh consumption, then place the skin and core in your glass jar.
Prepare the mixture: Add the brown sugar and filtered water to the jar. Stir well with a wooden spoon until the sugar is mostly dissolved. Add the cinnamon and cloves if you want to flavor the beverage.
Cover properly: This step is crucial. Do not close the jar airtight. Fermentation produces gas, and if it cannot escape, pressure can dangerously build up, causing foamy overflow or even breaking the glass. Instead, cover the opening with a breathable cloth, paper towel, or coffee filter, securing it with a rubber band.
Let it ferment: Place the covered jar on your countertop, away from direct sunlight. Let it sit at room temperature for 2 to 3 days, checking daily. You will notice white bubbles forming on the surface—this means fermentation is underway.
Strain and refrigerate: When the liquid smells sweet and slightly tangy after 2 to 3 days, strain it through a fine sieve into a clean large pitcher. Discard the pineapple solids. Refrigerate the drink and enjoy it well chilled, served with ice cubes.
Important precautions
Remove pesticides: Because you are using the outer skin, opt for organic pineapple if possible. Otherwise, scrub the skin thoroughly with water and a bit of white vinegar before cutting to reduce chemical residues.
Watch for mold formation: A light white foam on the surface is normal during fermentation. However, dry, fuzzy spots in green, blue, pink, or black indicate harmful mold growth. In that case, discard the contents completely and do not consume.
Do not ferment too long: Do not exceed three to four days at room temperature. The bacteria will continue consuming sugars and turn the drink into pineapple vinegar, which is safe for cooking but too acidic as a refreshing beverage.
Clean your equipment well: Wash your hands, cutting board, knife, and jar thoroughly with hot soapy water before starting. This ensures that only beneficial bacteria develop in your preparation.
