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The Japanese art of whisking stone-ground powdered green tea in a wide bowl: a practice of four centuries that turns two ingredients, water and tea, into something approaching a philosophy
Origin: Kyoto, Muromachi Japan
From the journey of Tea.
Matcha (抹茶, literally 'rubbed tea') is produced by shading tea plants for three to four weeks before harvest to stress them into producing higher concentrations of chlorophyll, amino acids (particularly L-theanine), and caffeine. The first flush spring leaves are then steamed to halt oxidation, dried, and ground on traditional granite stone mills (ishiusu) at very low speed to preserve the volatile aromatic compounds and produce a fine, bright-green powder. The stone mill grinds at approximately thirty revolutions per minute: fast enough to process the leaf but slow enough not to generate heat that would degrade the flavour. One stone mill produces approximately thirty to forty grams of matcha per hour; this is why ceremonial-grade matcha is expensive. The preparation of a bowl of matcha, as practised within the chanoyu (茶の湯) tradition codified by Sen no Rikyū in the Momoyama period (sixteenth century), is simultaneously the simplest and most ritualised food preparation in the world. Two versions exist: usucha (薄茶, 'thin tea'), a lighter whipped bowl using approximately 1.5–2 grams of matcha per 70–80ml of water, made with a frothy surface; and koicha (濃茶, 'thick tea'), a dense, syrup-like preparation using 3–4 grams per 30–40ml of water, stirred slowly to a smooth paste without froth, shared from a single bowl, and reserved for the most formal occasions. Both versions use the same materials: a chawan (tea bowl), a chasen (bamboo whisk), a chashaku (bamboo tea scoop), and water at precisely 70–80°C. This recipe describes the preparation of usucha, the more common form, as practised in a home or tea-house setting without the full formal ceremony.
Ceremonial-grade matcha from reputable producers in Uji (Kyoto) or Nishio (Aichi) is essential: the difference between ceremonial and culinary grade is not subtle. Good ceremonial matcha is vivid jade green, sweet and umami on the nose, with a clean, bitter finish that is pleasurable rather than harsh. Culinary-grade matcha, which is processed from later harvests and coarser leaves, has an olive-drab colour and a sharp, often unpleasant bitterness that is designed to be masked by milk or sugar. For a bowl of ceremonial matcha drunk straight, there is no substitute for quality. Store matcha in an airtight tin in the refrigerator and use within six weeks of opening.
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