Only the youngest flush leaf is picked for high-quality gyokuro. Special cultivation techniques are employed to produce a tea that is famous for its rich flavor and pale lemon-green color. Gyokuro tea plants are grown in the shade for approximately three weeks before harvesting begins. Removing direct sunlight in this way reduces leaf photosynthesis which alters the proportions of flavonoids, amino acids, sugars, and other substances that provide tea aroma and taste.
Gyokuro is a delicious gourmet tea. Netto Gyokuro the leaves are (unlike sencha) aged for about 6 months. Uji Tezumi Gyokuro is aged for 1.5 years.