Grandpa Style Brewing
The informal Chinese approach of adding tea leaves directly to a glass and drinking around them — no pot, no strainer
Grandpa style (爷爷泡茶, yéye pào chá, 'grandfather tea brewing') is an informal Chinese tea preparation method in which loose tea leaves are placed directly in a large glass or mug without any separate brewing vessel, strainer, or decanting step. Hot water is added directly to the leaves in the glass, and the drinker consumes the tea while leaves float or settle, adding more hot water as the glass empties. The style is named after the archetypal image of an elderly Chinese man drinking tea this way — a thermos of hot water nearby, leaves slowly accumulating at the bottom of the glass over hours of consumption.
Quick facts
- Type
- Brewing Method
How Grandpa Style Works
The grandpa style sequence is deliberately minimal: add a pinch of loose tea leaves to a glass or wide mug (5–7 grams for a 250–400 ml vessel is a common starting amount); pour in hot water at approximately 80–90°C; let the leaves settle for a minute before drinking. As the glass is consumed, more hot water is added directly — often from a thermos that maintains water at a convenient temperature throughout the day. The leaves remain in the glass throughout. More leaves may be added periodically. The essential characteristic is that there is no separate brewing vessel and no moment of complete extraction followed by separation — the tea is always in contact with the water. This produces a continuously evolving, gradually weakening infusion that starts moderately strong and becomes lighter as dilutions accumulate.
Tea Selection for Grandpa Style
The grandpa style works best with teas that do not become unpleasantly bitter with extended water contact — the continuous leaf-water contact that would over-extract a sensitive gyokuro or delicate white tea is not a problem for robust teas. Green teas particularly suited to grandpa style include: Chinese green teas with mature leaf structure (longjing, mao feng, or standard Chinese green teas); oolong teas (both Taiwanese and Chinese varieties); aged pu-erh and shou pu-erh (which actually continue to improve with extended contact in the grandpa style). Very fine, bud-only, or delicate white teas are less suited because their extraction is rapid and sensitive to temperature and contact time. The informal approach also means that exact water temperature is less critical — boiling water from a thermos that has cooled to 85–90°C naturally works acceptably for most teas.
Cultural Context and the Chinese Thermos
The grandpa style is inseparable from the Chinese thermos culture — the vacuum-insulated thermos flask (保温壶, bǎo wēn hú) is an ubiquitous object in Chinese offices, factories, universities, and public spaces. Hot water is maintained all day in the thermos, allowing continuous informal tea drinking without access to a kettle or stove. The combination of the thermos and a personal glass is the complete grandpa style setup. This approach is particularly associated with older generations and workplace environments where elaborate tea preparation is impractical. In contrast to gongfu cha (which requires focused attention, multiple vessels, and deliberate sequencing), grandpa style is the absolute opposite: maximum informality, zero protocol, minimum equipment. Both coexist within Chinese tea culture as different modes for different contexts.
Sources & further reading (2)
- encyclopedia — accessed 2026-05-07
- specialty-reference — accessed 2026-05-07
Frequently asked questions
Won't the tea become over-extracted and bitter with grandpa style?
Potentially, with the wrong tea. Teas high in catechins that extract quickly at high temperatures (delicate Japanese green teas, fine white teas) can become bitter. However, many Chinese green teas, oolongs, and dark teas tolerate extended water contact with minimal bitterness increase — their leaf structure and chemistry produce a long, gradually weakening infusion rather than a suddenly sharp over-extraction. The continuous addition of fresh hot water also means the tea concentration is frequently diluted. Grandpa style is self-regulating in this sense: the tea becomes progressively weaker with each top-up.
How do you avoid swallowing tea leaves?
Experienced grandpa style drinkers develop an instinct for tilting the glass to drink while the leaves remain at the bottom or floating mid-glass. The leaves tend to settle with time. Large-leaf teas (longjing, mao feng) are easier to manage than small-particle teas. Some practitioners use a glass with a slight narrowing at the lip that provides a natural filter. Alternatively, the last sip is left in the glass with the accumulated leaves — the drinker drinks down to but not including the last centimetre.
Is grandpa style the same as just leaving tea in a mug?
Functionally similar, but culturally distinct. In Western tea culture, leaving a tea bag in a mug is often done for stronger extraction, then removed. Grandpa style is a deliberate continuous-infusion practice involving loose leaf tea, hot water from a thermos, and hours of casual consumption with multiple top-ups. The leaves are not removed at any point. The practice reflects a specific cultural attitude toward tea as a continuous daily companion rather than a timed beverage.