Name: Neighborlys Thai Ginger Bambucha Recipe
Cook time: 24 h
Total time: 24 h
Yield: 8 servings
Cuisine: Thai
Ingredients: 2 tbs strong black tea (or Assam/Thai blend); 1 l water (for steeping); 1 cup sugar (white granulated); 240 ml raw kombucha starter (previous batch) or store-bought unpasteurized kombucha; 3 tbs fresh ginger, peeled and grated; 2 stalks lemongrass stalks (tender part), bruised and chopped; 3 leaves kaffir lime leaves (or zest of 1 lime); 10 leaves fresh Thai basil leaves (or sweet basil); 1 tbs palm sugar or light brown sugar (optional, for deeper Thai flavor); 2 tsp honey or cane syrup (for secondary ferment, optional); 2 tbs fresh lime juice; 1 tbs thinly sliced fresh ginger (for bottles)

Method

Base Tea & Tea Kombucha

Brew sweet tea

Bring 1 liter of water to a boil. Remove from heat and add 2 tablespoons strong black tea. Steep 8 minutes for a strong brew, then remove tea leaves or strain. While the tea is still hot, add 1 cup granulated sugar and stir until fully dissolved. Allow the sweet tea to cool to room temperature (20–25°C / 68–77°F) — this can take 1–2 hours. Do not proceed if tea is warm/hot to the touch.

Once the tea is fully cooled, pour it into a clean 2–3 liter glass jar. Add 240 ml raw kombucha starter to the cooled sweet tea. Gently place your SCOBY on top if you are using one. Cover jar with a tight-weave cloth or coffee filter and secure with a rubber band. Place jar in a warm (21–27°C / 70–80°F), dark spot to ferment for the primary ferment for 7–10 days, tasting after day 5. The liquid should become slightly tangy and less sweet.

Thai Flavoring & Aromatics (for secondary infusion)

Prepare aromatics

While primary fermentation is finishing (day 5–9), prepare the Thai aromatics: peel and grate fresh ginger (about 3 tbs). Trim and bruise the lemongrass stalks by lightly smashing the stalk and then chopping the tender parts into 2–3 cm lengths. Rinse kaffir lime leaves and stack them for a rough chiffonade or zest one lime if kaffir leaves are unavailable. Lightly bruise basil leaves to release aroma.

When primary fermentation reaches your desired tang (generally 7–10 days), remove the SCOBY and 240 ml of kombucha to reserve as starter for your next batch. Strain the fermented kombucha into a clean vessel to remove large particulates.

Add the prepared fresh ginger, bruised lemongrass pieces, kaffir lime leaves (or lime zest), and basil leaves directly into the kombucha if you plan a short cold infusion (gentler) or to use during secondary fermentation for carbonation and stronger flavor. If you want a deeper, cooked-thai note, simmer 1–2 minutes 1 tablespoon palm sugar with 50 ml water and add that cooled syrup to the kombucha instead of or in addition to the palm sugar listed.

Secondary Ferment & Bottling

Bottle for carbonation

Pour flavored kombucha into clean, airtight flip-top or capped bottles, leaving 2–4 cm headspace. If you want more carbonation and a slightly sweeter end, add 2 tsp honey or cane syrup and 2 tablespoons fresh lime juice per 1 liter of kombucha and a few thin slices of fresh ginger into each bottle. Equally distribute the aromatics between bottles.

Seal bottles and store at room temperature (20–24°C / 68–75°F) for 2–5 days to build carbonation. Check bottles daily and release pressure if necessary to prevent over-pressurization. For stronger ginger-lemongrass flavor, leave 3–5 days; for lighter flavor, 2–3 days.

When desired carbonation and flavor are achieved, move bottles to the refrigerator to slow fermentation. Chill at least 12 hours before serving. Strain or decant into glasses; garnish with a basil leaf, a thin lime wheel, and a small piece of ginger if desired. Keep refrigerated and consume within 2–3 weeks for best flavor and safety.