Care Instructions

Our Ceramics

Each of our ceramics are handmade or hand-finished with love and care. The more you use your ceramics, the more they will become your own. With your own personal and unique character. To retain the quality of your piece and ensure longevity, please take good care of your ceramics.
Let us guide you through how you can look after your piece. Please refer to this page for more information about the characteristics of our ceramics.

Porcelain and Pottery

- Porcelain -

Porcelain is made from crushed porcelain stone, feldspar, and silica stone mixed with clay containing some small impurities like kaolin. It is fired at an extremely high temperature of 1,200℃ – 1,400℃, which makes porcelain strong and durable. It is rather light, hard, and eliminates water absorption.

- Pottery -

Pottery is made predominantly of natural clay and is fired at 900℃ – 1,300℃. After the final shape has been set, it may be painted with a glaze called “yuyaku,” which creates a glossy, multi coloured finish on the surface of the clay. After firing the glaze turns glass-like making it waterproof. There are also many pottery pieces that are fired without the "yuyaku" glaze being applied. Since the firing temperature is lower than porcelain, it becomes porous (with many small air holes) which makes pottery water absorbent. Because it's porous, extra care is needed. 
Please read the following recommended care instructions below.


Medome (Sealing technique)

There are many small holes on the surface of clay pots and pottery. As you use it, discolouration and odour transfer occur from food and/or liquid. Sealing is to coat the surface with starch* to fill those holes to prevent them. It also prevents stains and cracks. This is not necessary, but if you would like to enjoy your ceramic for a long time, we recommend to take this process.
* We traditionally use the water that was used to rinse the rice. The left over water contains starch. But if you don't cook rice often, you can also use flour or potato starch.

How To

1. Place a clean cloth on the bottom of the pot followed by your pottery. Add enough agitated rice water (if using flour, mix 1-2 tbsp into water) to cover all your pottery. If you are placing multiple plates or bowls at the same time, make sure to put cloth or paper towel between each pottery to prevent it from breakage.

2. Gradually bring to a boil from a low heat, then simmer over low heat for about 15-20 minutes. Please note that if you boil on high, the bottom of the pot and the tableware may collide with each other and crack.

3. Turn off the heat, allow it to cool down slowly. Take out your pottery and wash it throughly.

4. Wipe with a clean dry cloth and let it air dry.

before plating

A dry pottery absorbs liquid easily and causes stains. As a countermeasure, soak the pottery in running water before using and wipe it lightly, and then place food to prevent stains. 


Use a soft sponge and a mild detergent to hand wash your ceramics. It is important to wash gently with a soft sponge or cloth. Some of our products are dishwasher safe, however hand washing is recommended for longevity of your ceramics. Please air dry them well before storing them in the cupboard. Leaving them moist can cause mould and/or musty odour.


Please refer to each products page and check in advance whether it is compatible with microwave and oven as usage and precautions may differ depending on the ceramic. Also this is very important to remember that sudden changes in temperature such as placing your item from freezer to oven are likely to cause thermal shock, which may result in cracks and breakages. Always place very hot items onto either wood or cloth.


Even if you seal the pottery (medome) or soak it in water before serving the dish, sometimes the pottery could end up with some stains, odour or even mould. It could be difficult to remove them even if you wash the pottery carefully with detergent. Here's what to do in such cases.

・Simmer items slowly in hot water (bring it to a boil but keep it on low). If more cleaning is needed, we recommend adding some lemon juice, vinegar or baking soda to the hot water.

・For tea or coffee stains, add 1 tsp of salt onto a wet sponge and wash items gently.

・Always air dry items well before storing away in the cupboard. It is also a good idea to sun dry them.


We cannot guarantee the longevity of our ceramics. We can only recommend you follow our care instructions. However with proper care, these ceramics should last for a lifetime.
It is important to take good care of your ceramics so that they last generations and bring joy to your dinner table for many years to come!


Toka Cramics

Authentic Japanese Ceramics and Tableware