Kyusu Teapot Size Guide: How Many ml Do You Need?
Buying a kyusu teapot seems simple until you realize they come in sizes from 80ml to 600ml or more, and the size you choose significantly affects how you brew. Too large and you'll over-brew consistently; too small and you'll be making multiple pots for two people. Getting the size right is the most practical decision in kyusu selection.
How Japanese Tea Serving Works: Why Size Matters
To understand kyusu sizing, you need to understand how Japanese tea is designed to be served. Unlike Western teas where you steep a bag in a large mug and drink it down, Japanese loose leaf tea:
- Is brewed in small, concentrated volumes
- Is poured into small cups (yunomi) of 100-150ml per serving
- Is designed for multiple infusions from the same leaves — a good sencha or kabusecha yields 3-4 quality infusions
This means a 200ml kyusu brewing 2 cups of 100ml each is used correctly. Pouring the same kyusu into one large coffee mug is using it wrong — you're taking all the volume in one pour and losing the ability to do multiple infusions at proper concentration.
Japanese Tea Cup Size Reference
Standard yunomi teacup sizes to calibrate against:
- Small yunomi: 80-100ml (gyokuro, premium sencha)
- Standard yunomi: 120-150ml (sencha, kabusecha, everyday teas)
- Large yunomi: 180-200ml (hojicha, genmaicha, bancha)
For each infusion, you pour the entire kyusu volume split evenly between cups — this is called mae-ire and ensures each cup gets the same concentration.
Sizing by Number of People
Solo Brewing (1 person)
Recommended size: 150-200ml
A 150-200ml kyusu poured into a standard 120-150ml yunomi gives you one generous serving per infusion. You can do 3-4 infusions from the same leaves, which is standard practice for quality Japanese tea. A 100ml kyusu also works if you primarily drink small-cup teas like gyokuro.
Two People
Recommended size: 200-300ml
A 200ml kyusu poured into two 100ml cups, or a 250ml kyusu into two 120-125ml cups. This is the most common household kyusu size and covers most situations for a couple or two friends.
Three to Four People
Recommended size: 350-450ml
At this capacity, you can pour 3-4 servings of 100-120ml each per infusion. Still practical for 3 infusions from quality tea. The larger size also works as a “one big pot” for everyday bancha or hojicha if you're not concerned with multiple infusions.
Family or Entertaining (5+ people)
Recommended size: 500-600ml+
At this scale, you're typically brewing hojicha, bancha, or barley tea rather than premium sencha. A large back-handle (ushirode) kyusu handles this scale gracefully. Alternatively, a donabe or a large Hario glass teapot works for large groups.
Size by Tea Type
Different teas have different optimal serving sizes:
Gyokuro (premium shaded tea): This tea is intentionally brewed in very small volumes — 40-60ml per serving at about 4-5g of leaves per 60ml. A small kyusu of 100-150ml is ideal. Do not use a large kyusu for gyokuro — you'll over-brew by trying to fill a big pot.
Kabusecha and high-grade sencha: 150-250ml range. These teas yield 3-4 excellent infusions and benefit from a kyusu sized for 1-3 servings per pour.
Standard sencha: 200-300ml is the versatile everyday range.
Genmaicha and hojicha: 250-400ml. These everyday teas are often served in larger quantities and can handle larger kyusu sizes. They're less sensitive to volume than premium green teas.
Bancha: Any size works. Bancha is the forgiving everyday tea that's less fussy about brewing parameters.
Browse our Tokoname kyusu in multiple sizes, and our full kyusu collection.
When to Have Multiple Kyusu
Serious tea drinkers often own multiple kyusu in different sizes:
- A small 100-150ml kyusu dedicated to gyokuro (the gyokuro-specific size and seasoning)
- A 200-250ml kyusu for daily sencha or kabusecha
- A 350-400ml kyusu for hojicha and bancha, or for hosting
This approach also allows dedicating each pot to a specific tea type, building a seasoning over time that enhances that particular tea.
Common Sizing Mistakes to Avoid
Buying too large for your teas: A 600ml kyusu for one person brewing gyokuro means you either make way too much tea or brew it under-extracted. Match kyusu size to your actual use pattern.
Buying too small for guests: Having only a 150ml kyusu means 5 infusion cycles to serve 4 people each a single cup. Useful to have a larger option for guests.
Buying based on appearance alone: A beautiful 450ml decorative kyusu isn't useful as a solo gyokuro pot. Buy based on function first, then choose the most attractive option in the right size range.
Frequently Asked Questions
What does “go” mean on kyusu sizing?
Some Japanese kyusu are measured in go — a traditional Japanese volume unit where 1 go = approximately 180ml. A 2-go kyusu is about 360ml, a 1.5-go is about 270ml.
Is a larger kyusu better quality?
No. Quality is independent of size. Some of the most refined, expensive Tokoname kyusu are small (100-200ml) specifically designed for premium green teas.
Can I use a kyusu with loose leaf tea directly without straining?
Yes — kyusu have built-in ceramic strainers. You place loose leaf directly in the pot, steep, and pour through the integrated strainer. No additional straining needed.
What if I want to share tea but only have a small kyusu?
Brew multiple infusions sequentially. A 200ml kyusu brewing sencha for 2 people does 2 servings per infusion, 3-4 infusions total = 6-8 cups of tea from one measure of leaves. Perfect for a casual tea session for two.
What's the right size for a beginner's first kyusu?
The 200-250ml range is the most forgiving and versatile starting point. It's appropriate for solo drinking (2 cups per infusion) and small groups, and handles most Japanese green teas well.
