Mastering the chasen: how to use and care for your matcha whisk

Your chasen does more work than it looks like. Hand-carved from a single piece of bamboo, its tines curved inward by heat and tension to create the even foam that makes a properly whisked matcha so distinct.

Treat it well and it keeps rewarding you. Here's how.

T2 Tea

Mastering the Matcha Flask

Matcha is traditionally whisked in a bowl with a bamboo chasen, requiring time and technique. The T2 Matcha Flask reimagines that ritual: shake it, and the hidden stainless steel whisk creates a smooth, suspended blend. Double-wall insulation keeps matcha at around 60°C (140°F) for up to six hours, and the leakproof, slim profile fits most car cup holders.

Step-by-step guide

Remove the lid and whisk from the flask, then add 1 teaspoon of T2 Matcha.

If you prefer a sweeter cup, try T2's range of flavoured matchas.

Add 200ml (6.7fl oz) of water at 80°C (176°F). Allow to vent for 1 minute.

Fill the flask just over halfway with water, leaving room for milk, then tightly screw the whisk and lid on.

Shake the flask about 20 times. Count to 10 before opening to let the matcha settle, then remove the lid.

The more you shake, the smoother and creamier the result. Top with warm milk and honey to taste, or use cold milk and ice for iced matcha.

Care and use

  1. Don't fill the flask more than three-quarters full with hot water. This leaves enough room for the matcha to mix properly without overflowing.
  2. The flask is not suitable for the microwave or dishwasher. Wash in warm, soapy water.
  3. Avoid dropping the flask. This can damage the internal vacuum seal that keeps it leak-free and heat-retaining.
  4. The vacuum seal keeps your drink at around 60°C (140°F) for up to six hours.
  1. Don't fill the flask more than three-quarters full with hot water.
    This leaves enough room for the matcha to mix properly without overflowing.
  2. The flask is not suitable for the microwave or dishwasher. Wash in warm, soapy water.
  3. Avoid dropping the flask.
    This can damage the internal vacuum seal that keeps it leak-free and heat-retaining.
  4. The vacuum seal keeps your drink at around 60°C (140°F) for up to six hours.

Featured products

T2 Stainless Steel Matcha Flask Blue

Stainless Steel
$52.00 NZD
20% off matcha flasks with any purchase*
Offer available online and in-store from 9:00am AEST Wed 26th August 2026 to 11:59pm AEST Sunday 6th September 2026. Discount applied automatically at checkout. Offer applies Matcha Flasks inclusive of SKU's H999BU208, H999BU210, H999BU202, H999BU207, H999BU199, H999BU198, H999BU077, H999BU209. Excludes already-discounted and sale items, gift cards, e-gift cards and delivery charges. Cannot be used in conjunction with bundle offers, subscription pricing, Tea Society sign-up discount, or any other promotional offer. T2 reserves the right to withdraw or amend this offer at any time.

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