How much honey, tea, water, and starter do you need for an N-quart batch of jun (honey kombucha)? Inputs scale the textbook 70 g/L honey + 5 g/L tea + 15 % starter recipe; output is honey weight (g, oz, tbsp), tea weight, hot-steep water, cold top-off water, starter volume, expected fermentation timeline, and target finish pH.
2.0US quarts (1.89 L)
0.5 qt (test)2 qt (½ gal)8 qt (2 gal)
Sweetness target
Tea
Steep at 75–80 °C (do not boil — bitter) for 5–7 minutes, then strain.
Starter share (mature jun from prior batch)
Honey required
132g
(4.7 oz · 6.3 tbsp)
Stir into hot tea while it's still > 60 °C so it dissolves cleanly, then cool the must to < 30 °C before adding the starter and SCOBY.
Tea, water & starter
9.5
Tea (g) · ≈ 4.7 bags
402
Hot steep water (mL)
1207
Cold top-off water (mL)
284
Starter (mL) · ≈ 1.20 cup
Order of operations: steep the tea in the hot water (5–7 min), pull bags / strain, stir in honey while still hot, top off with cold water to cool the must below 30 °C, then add starter + SCOBY. Cover with breathable cloth, ferment 21–26 °C out of direct sun. Honey volume itself ≈ 93 mL — the cold top-off already accounts for it at this batch size.
Fermentation timeline at standard sweetness.5–8 days at 21–26 °C — textbook jun window — start tasting day 5, bottle when pH hits 3.0–3.2. Target finish pH 2.8–3.2 (start ≈ 4.0–4.5 with 15 % starter). A pH below 2.6 has gone past kombucha into vinegar territory; above 3.5 it's underfermented and may be unsafe to bottle. Use 0.1-resolution pH strips or a meter, not taste alone — the sweetness can mask the acid early. Bertelloni 2022, Coton 2017.
Method. Honey grams = total_volume_L × honey_concentration_g_per_L; tea grams = total_volume_L × tea_concentration_g_per_L; water = total_volume − starter. Standard concentrations: 70 g/L honey + 5 g/L green tea + 15 % mature jun starter (Crum & LaGory 2016, The Big Book of Kombucha). The 25 % hot-water split is a practical heuristic: enough hot water to fully extract the tea polyphenols and dissolve the honey, with the cold top-off rapidly cooling the must to a SCOBY-safe < 30 °C — avoiding the "poured boiling tea on my mother" mistake that kills new brewers' cultures.
Jun is not sugar kombucha. Pour honey into a sugar-adapted SCOBY and the brew usually stalls — honey's residual peroxide + lower available nitrogen disadvantages the resident Komagataeibacter / Brettanomyces consortium. A true jun mother (purchased or gifted from another jun brewer) is honey-adapted and ferments cooler (21–26 °C vs. 24–29 °C) and faster (5–8 days vs. 7–14 days) than kombucha. Don't substitute; use a real jun starter. Marsh 2014; Coton 2017; Bertelloni 2022.
Planning tool, not a yield guarantee. Real fermentations vary ±1 day on timeline and ±0.2 pH at finish depending on starter health, ambient temperature, honey antimicrobial load (manuka honey notably suppresses jun fermentation — stick to clover, wildflower, or orange blossom for first batches), and SCOBY generation. For commercial jun brewing, calibrate against your own pH log across at least three batches.