Ingredients
Method
Brew the Green Tea
- Heat 1.25 liters water to 75 to 80°C. Add the green tea and steep for 2 to 3 minutes. Strain immediately. Do not use boiling water and do not oversteep, or the tea can become grassy, flat, or bitter. Green tea's tannins extract considerably faster and more aggressively at higher temperatures than at this controlled range, which is exactly why staying within this specific window, both in temperature and time, is what protects the tea's clean, delicate character from tipping into that harsher territory.
Sweeten the Tea
- While the tea is still warm, stir in 110 to 140g sugar until fully dissolved. Set aside and let cool to room temperature. Dissolving the sugar while the tea is still genuinely warm takes advantage of sugar's much greater solubility at that temperature, ensuring it fully dissolves rather than leaving any undissolved granules once the tea cools.
Prepare the Cucumber Extraction
- Reserve 16 thin cucumber rounds for serving. Roughly chop the remaining cucumber. Blend the chopped cucumber with the 15g sugar and a pinch of salt until liquefied. Strain through a fine-mesh sieve or cheesecloth into a bowl, pressing gently to extract the juice. You should get a fresh, pale green cucumber juice. Chill until needed. That small pinch of salt added before blending genuinely helps draw out and concentrate the cucumber's own natural juice through osmosis, giving the subsequent strain more actual liquid to work with rather than fighting against a drier pulp.
Cold-Infuse the Lemon Balm
- Lightly bruise the lemon balm sprigs between your fingers to release aroma. Add them to the cooled sweetened tea and refrigerate for 30 to 45 minutes. Taste after 20 to 25 minutes. Once the tea has a clear fresh lemon-balm note, remove the herb. Do not leave it in too long or the infusion can become too leafy and dull. Tasting partway through this steep, rather than committing to a single fixed time, is what lets lemon balm's fresh, lemony character be judged directly against how it's actually developing — that flavour can shift from bright and citrusy toward something duller and more leafy the longer the herb sits, and active tasting is the only reliable way to catch that transition.
Combine and Balance
- Stir the strained cucumber juice into the lemon balm-infused tea. Add 500 to 650ml cold water until the drink tastes light, clean, and delicate rather than heavy or vegetal. If needed, add 10 to 15ml fresh lemon juice to sharpen the flavor slightly. The final drink should stay very pale and gentle. The final yield should be about 2 liters. This tasting checkpoint matters directly given how much cucumber intensity and the developed lemon balm infusion can both vary — building in that adjustment stage accounts for that natural variability rather than assuming a fixed recipe always lands at the same balance.
Chill and Serve
- Chill the finished tea for at least 30 minutes. Fill tall glasses with ice. Add 2 cucumber rounds inside each glass and garnish with a small lemon balm sprig. Pour in the iced tea and serve immediately. Using fresh, reserved cucumber rounds and lemon balm sprigs specifically for garnish, rather than reusing the spent infusion herb, keeps the visual presentation looking genuinely vivid and fresh.
Notes
Brewing the green tea within that specific 75–80°C window deserves genuine respect as the single detail most responsible for whether this drink tastes properly delicate or grassy and bitter. Green tea's compounds extract considerably faster and more aggressively at higher temperatures than black tea's do — both the controlled temperature and the brief 2 to 3 minute steep work together to extract genuine flavour while staying well clear of that harsher territory.
Infusing the lemon balm entirely cold, and tasting it periodically as it steeps, deserves the same attention given to every genuinely delicate fresh herb throughout this collection. Lemon balm's naturally bright, lemony character can shift over time, even in cold water, toward something duller and more leafy — active tasting during that steep is what lets the herb be pulled at precisely the point where its fresh citrus-herbal note is clearest, before it moves past that peak.
The small pinch of salt added to the cucumber before blending deserves attention as a genuine technique detail rather than a flavour seasoning. That salt helps draw moisture directly out of the cucumber's own cell structure through basic osmosis, meaning the subsequent straining step has considerably more actual juice to extract rather than working against a drier, more resistant purée.
The recipe's own explicit guidance that this drink "should taste very light, fresh, and garden-like, not strongly sweet or aggressively herbal" deserves to be treated as the whole recipe's organizing principle. Every technique choice — the controlled tea brewing, the gentle cucumber straining, the carefully tasted lemon balm infusion — exists specifically to protect that delicate, restrained balance from tipping toward anything heavier or more assertive.
