What Powder and Packaging Technology Made Possible

The wish to make matcha convenient is old. Whether it could be done was a technical question.

1930: vacuum canning

Uji matcha combined with granulated sugar, vacuum-canned and sold — reportedly an industry first, in 1930.

Vacuum means removing oxygen. Matcha's green comes from chlorophyll, which breaks down on contact with air, shifting toward brown. Aroma compounds evaporate.

Powder has far more surface area than whole leaf, so this proceeds quickly. Without sealing technology, the product could not be distributed at all.

Refrigeration created the demand

Household refrigerators spread from the late 1950s.

Ice at home meant demand for cold drinks rose sharply, and dissolving powder in water became a practical routine.

Technology alone is not enough — the conditions of use have to exist.

Granulation

Rather than shipping loose powder, some manufacturers form it into granules.

Fine powder wets only on its outer surface, forming a barrier that keeps the interior dry — the mechanism behind lumps. Granules let water penetrate.

Instant coffee comes as granules for the same reason.

Packaging materials

Aluminum-laminated pouches block light and oxygen. Matcha is never sold in clear bags because light degrades it.

Oxygen absorbers and nitrogen flushing serve the same purpose — preserving condition until the package is opened.

Individual portions

Stick packets seal each serving separately, so post-opening deterioration does not arise.

Strength is fixed, but portability and moisture resistance make it the rational format for certain uses.

One thing has not moved

Stone-milling tencha remains slow. Friction heat would drive off aroma and degrade color, so the mill turns at roughly 40 g per hour.

Packaging and formulation advanced. Producing the raw material still takes the time it takes.