Yunomi vs Teacup vs Mug: An Inch-First Guide to Rim Feel, Aroma & Capacity
Not all “cups” taste the same. Rim (drinking mouth) thickness, rim diameter, capacity, handle geometry, and material—porcelain vs stoneware—quietly reshape aroma, flow, and comfort. This inch-first guide (cm in parentheses; oz with ml) compares yunomi, teacups, and mugs so you can pick the right feel for your daily tea or coffee.

Why cups change taste & aroma
- Rim (drinking mouth) thickness: thinner = silkier, faster flow, more aroma; thicker = cozier, gentler landings.
- Rim diameter: wider opens aroma to the nose; narrower concentrates it.
- Capacity: space for aroma matters—6–8 oz (180–240 ml) for tea; 10–14 oz (295–415 ml) for long sips.
- Surface & material: porcelain reads smooth and crisp; stoneware adds tactile warmth.

Yunomi (handleless)
Direct contact with the clay brings a quiet, grounded pace. Slightly thicker rims and hand-hugging walls feel reassuring—perfect for sencha or roasted teas.
Browse: Yunomi
Teacup (thin-rim porcelain)
Lightweight and luminous, with a precise rim that lets aroma lead. Ideal for fragrant black teas and subtle light roasts.
Browse: Teacups · Arita porcelain
Mug (handle & warmth)
Roomy capacity and steady temperature, with a thicker rim that feels calm and forgiving—great for everyday coffee, café au lait, or long reading sessions.
Browse: Mugs
Size guide (in → cm / oz → ml)
Rim Diameter | Capacity | Best For |
---|---|---|
3.0–3.3 in (7.6–8.4 cm) | 6–8 oz (180–240 ml) | Tea-first aroma (sencha / black tea) |
3.3–3.7 in (8.4–9.4 cm) | 6–10 oz (180–295 ml) | Teacup versatility |
3.5–3.9 in (8.9–9.9 cm) | 8–12 oz (240–355 ml) | Everyday mug or generous teacup |
4.0–4.3 in (10.2–10.9 cm) | 12–14 oz (355–415 ml) | Latte / café au lait |
Handle & balance

- Small teacup handle: fingertip control for delicate pours.
- Yunomi hold: both hands cradle warmth and slow the pace.
- Mug handle: larger loop for stability over longer sessions.
Materials: Arita porcelain vs Shigaraki stoneware
- Arita (porcelain): thin, smooth rim; bright, clean sip. Pairs with fragrant teas and light roasts.
- Shigaraki (stoneware): gentle thickness and tactile grain; cozy, grounded mouthfeel for dark roasts or hojicha.
Scene-based picks
- Morning clarity: thin-rim teacup to lead with aroma.
- Afternoon focus: mug 10–14 oz (295–415 ml) for steady warmth.
- Guests: teacup & saucer for an elevated setting; yunomi for calm togetherness.
- Reading at night: mug or yunomi, depending on mood and brew.

Care & longevity
- Hand wash preferred: protects thin rims and glaze character.
- Avoid thermal shock: no sudden hot–cold swings, especially with matte or crazed glazes.
- Stack with care: place a soft cloth/felt between rims.
Editor’s Picks
Choose by rim and capacity, then let glaze and light set the mood.
Browse all Japanese cupsFAQ
Is a thin rim always better?
No—thin rims heighten aroma and speed; thicker rims feel cozier and slow the sip. Choose by mood and brew.
What’s a versatile everyday size?
3.3–3.7 in rim with 6–10 oz capacity balances tea and coffee well.
How do I protect rims over time?
Hand wash, avoid thermal shock, and place a cloth between stacked pieces.