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Glass kettles — Stovetop borosilicate

Stovetop borosilicate kettle 1.2L

*Bōlí zhǔ shuǐ hú*

玻璃煮水壶

Hand-blown borosilicate vessel that turns water watching into a ritual — see every bubble, never taste metal again.

$104USD · 980 g

Weight
980 g
Processing
Hand-blown from a single gather of soda-lime borosilicate glass; annealed at 560°C for shock resistance.
Sourced by

Fire, breath, and the eye of a tea master

Gao Liuzhou was already a respected tea judge when he grew frustrated with metal kettles that dulled the subtle sweetness of spring water. Determined to bring visual brewing back to centre stage, he left the competition circuit and spent three years apprenticing with a borosilicate glassblower in Huizhou, Guangdong — a region where tea culture runs deep and craftsmanship is a form of meditation.

Each kettle begins as a gather of molten soda-lime borosilicate at 1200°C. Gao shapes the bowl with wooden blocks, blows the neck by mouth, and trims the spout with shears while the glass still glows. The process leaves tiny tell-tale ripples — proof that no two are exactly alike. After shaping, the kettle is annealed in a lehr oven for eight hours, slowly cooling to prevent stress fractures.

The result is a vessel that invites the brewer to slow down. Water climbs the clear walls in stages, a silent show traditionally described as ‘the eyes of the fish’, ‘the strings of pearls’, and ‘the dragon’s well’. Because Gao refuses to add colourants or coatings, the water tastes precisely as it should: sweet, soft, and silent.

His studio, hidden behind an old tea house in Chaozhou, produces only a few dozen kettles each year. Each one bears his tiny engraved mark near the base — a reminder that the most essential tool in tea is sometimes the simplest.

The leaf, brewed

A kettle that lets water perform.

dry leaf

Weighty, flawless cylinder with faint breath ripples; light gathers along the rim, no impurities in the glass.

wet leaf

Filled, the glass magnifies oxygen clusters and tiny suspended bubbles; the wooden handle stays cool to the touch.

liquor

Water boils with pristine clarity — no metallic haze, just the dance of shrimp eyes, crab eyes, and pearl threads.

aroma

Steam lifts clean, carrying only the faintest scent of warm glass and mineral-free neutrality.

taste

The boiled water feels smooth and soft on the palate, with a gentle roundness; no scorched or metallic off-notes whatsoever.

finish

Leaves a clean, sweet aftertaste that prepares the mouth for tea — the memory is all eyes, no interference.

Brewing

A method, not a recipe.

Method
Stovetop (gas/electric; induction with adapter)
Ratio
Fill to 1.2L capacity, never above the spout line
Water temp
100
First infusion
Approximately 180 seconds to full boil on medium-high heat
Subsequent
Not applicable; reheat quickly if needed

Watch the bubble legend: 'shrimp eyes' at 70–80°C, 'crab eyes' at 85°C, 'threads of pearls' at 90°C, then 'dragon well' at rolling boil — perfect for green teas. Remove from heat when the surface roars.

Sourced by

Gao Liuzhou

tea master

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