Multiple Japanese tea cups with different shades of green tea on a wooden surface

緑茶の効果・効能|品種と淹れ方で変わる10の健康メリット

Does Matcha Have Caffeine? How Much and How It Compares

抹茶のカフェイン量は?コーヒーや煎茶との比較と妊娠中の目安

How Much Caffeine Is in Oolong Tea?

烏龍茶のカフェインはどのくらい?品種・淹れ方で変わる含有量

How Much Caffeine Is in Green Tea?

緑茶のカフェインはどのくらい?煎茶・玉露・抹茶の違い

How Much Caffeine Is in Hojicha?

ほうじ茶のカフェインは本当に少ない?他のお茶との比較

A Japanese ceramic teacup filled with golden-brown Hojicha tea next to a clay teapot on a wooden table

ほうじ茶の効能 — 香りとカテキンがもたらす健康効果

Aromatic compounds rising from a cup of brewed tea illustrating tea fragrance

お茶の成分|香気成分

Vitamins in Green Tea: What You're Actually Getting Per Cup

お茶の成分|ビタミン

Green tea catechin molecules alongside vibrant green brewed tea in a cup

お茶の成分|カテキン

Caffeine in tea leaves with a cup of freshly brewed green tea

お茶の成分|カフェイン

L-theanine amino acid in tea representing calm and focused relaxation

お茶の成分|テアニン

Fresh green tea leaves on a branch in a Japanese tea field, natural light

緑茶(煎茶)に含まれる成分・効能について