How to Clean and Maintain Glass Teaware

Thursday, 4 May 2017  |  The Tea Makers of London

Glassware is becoming increasingly popular with tea-lovers and tea connoisseurs alike. In this post, we share some tips on how to clean and maintain glass teaware.

As more and more people are steering away from the plain, traditional teabag and towards loose leaf speciality teas, teaware, in an array of different designs, materials, shapes, sizes and functionalities, are taking centre stage on coffee tables and dining tables across the nation.

At The Tea Makers of London, we believe that the best way to enjoy quality teas, is in glass teaware. Glass teapots and teacups allow you to view the tea as it steeps and provides you with a holistic tea experience that evokes all your senses - touch, sight, smell and taste. 

To help our customers get the most out of our teas, we launched the Zenshi Glassware Range. The range is inspired by the serenity and peace of traditional tea ceremonies. The innovative and elegant design of this collection - which is made from borosilicate, heat-resistant glass - provides multiple functions and makes each piece easy to use.

In this post, we present a few simple tips and tricks for cleaning and upkeep that will allow you to get the most out of your glassware. These tips will help you to prevent potential damages and to keep your glassware looking clean and polished. Use this advice to impress your afternoon tea guests with a stunning tea display.

Quick Cleaning Tips

  • To avoid staining, empty the teapot, teacup, Gaiwan or pitcher immediately after use and give it a quick rinse with hot water. If stains do occur, try washing the item with baking soda dissolved in hot water.
  • Note that the items in our Zenshi range are dishwasher safe, provided that you place them securely on the top shelf. However, we do recommend that you wash your pieces by hand to avoid potential breakages, as well as watermarks.
  • Wash with hot water, soap and a non-abrasive brush or sponge.
  • For the spout of teapots, we recommend using a Teapot Cleaning Brush.
  • After washing your glassware item, rinse under hot water to remove any soap residue. Soap residue can contaminate the flavour of your next brew.
  • To avoid unattractive water marks, wipe down your glassware with a soft and dry tea towel after cleaning and rinsing.

Quick Maintenance Tips

  • Do not expose your teaware to extreme cold temperatures.
  • Heat up your glassware gradually to avoid shattering.
  • Do not place a hot teapot or cup on a cold surface.


Cleaning & Upkeep of Glass Teaware

Zenshi Glass Teapots & Infuser Mugs



Coil filters are suitable for use with large leaf teas and flowering teas.

Glass and stainless-steel infusers are suitable for smaller leaf teas.

It is common for some small sediments to seep through the infuser during steeping.



Clean the teapot before the first use.

Coil filters should be removed when cleaning.

For spouts and lids, we recommend using a teapot cleaning brush.

Teapots can be cleaned in the dishwasher if you place it securely on the top shelf.

Useful Tips

Be aware that the lid can slip off if not held securely in place when pouring the tea.

Microwave & Stove Top


Do not place any metal items in the microwave!

Teapots are stove-top safe for gas and electric stoves on low to medium heat only.

Not suitable for induction heat stoves!

Zenshi Glass Double-Walled Tea Glasses



Thoroughly rinse the glass with warm water before first use.

The small air-hole at the bottom of the glass is a safety precaution placed to regulate the air pressure between walls.

When cleaning the product, avoid abrasive brushing - particularly around the base of the glass.

If the rubber seal is damaged, water will be trapped inside the hole and fog will occur between the two walls.

Useful Tips

To avoid fracturing the inner layer, use caution when placing ice into the glass and when using metal spoons.

When making iced tea, we recommend pouring the liquid first and then adding ice.

Microwave & Stove Top

Not recommended.

Helpful Tips for Zenshi Glass Teaware

Heating Glassware


The glass is less likely to break or shatter if you warm it up gradually.

If the ambient temperature in the room is low, warming up the product before use will prolong its life.

Avoid resting a hot glass product on cold surfaces.


Glassware will heat up when you pour in hot water. Please handle the product with care.





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The Tea Makers of London