Kori-Dashi Ice-Brewed Gyokuro
The traditional Japanese kori-dashi method—gyokuro leaves draped with ice cubes that melt slowly into a syrupy, jade-green nectar of pure umami.
Kori-dashi means literally 'ice extraction.' Instead of pouring water over the leaves, you place ice directly on top and let it melt drop by drop. The result is the most concentrated, sweetest, umami-richest cup gyokuro can produce—closer to a chilled dashi syrup than a glass of iced tea.
Because the extraction temperature stays just above freezing for the entire brew, almost no catechins or caffeine are pulled out. What you taste is pure amino acids: theanine, glutamic acid, and a marine-vegetal sweetness that feels impossible from a green tea.
Use the very best leaves you can afford for this method. There are no shortcuts — kori-dashi exposes everything about the tea. Mid-grade gyokuro tastes muted; top-grade gyokuro tastes transcendent.
Serve in tiny cups, the way a sommelier would pour a dessert wine. Two small sips is the typical pour. After the first round, top the leaves with warm 70°C water for a beautifully contrasting second infusion that completes the experience.
Ingredients
- 2 tbsp top-grade gyokuro leaves
- 10–12 large ice cubes (made from filtered or soft water)
- 1 small flat-bottomed teapot or hohin
- 1 small chilled tasting cup
- Optional: 1 tsp finely grated yuzu zest for garnish
- Optional: a few drops of cold filtered water if the ice melts slowly
How to make it
- 1Spread the gyokuro leaves in an even layer across the bottom of the hohin or flat teapot.
- 2Stack the ice cubes directly on top of the leaves, covering them completely. Do not add water.
- 3Cover loosely and let the ice melt at room temperature — 25 to 40 minutes depending on the room.
- 4Pour the thick, syrupy jade liquid slowly into the chilled cup, holding the leaves back with a built-in strainer.
- 5Sip in two small mouthfuls. For a second infusion, pour 70°C water over the spent leaves, steep 30 seconds, and compare flavors. Garnish the first round with a tiny pinch of yuzu zest if desired.
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