ONJIN (温刃) -Butter Knife
Hard butter melts with your body warmth.
Pure silver delivers a stress-free morning.
Your Warmth, Perfect Spread.
Fresh baguettes and croissants, never crushed.
Cold butter straight from the refrigerator gradually softens to perfect spreadability—simply by holding the knife. Your body warmth does the work.
A small daily frustration transforms into an elegant moment.
Solving the Universal "Hard Butter Problem"
Anyone who loves bread and butter knows this moment.
Hard butter tears the bread. Waiting is tedious.
ONJIN solves this universal problem using the simplest energy source: your body warmth.
・Thermal conductivity: 420 W/(m·K) — 26 times that of stainless steel.
Your hand's warmth instantly transfers to the blade edge.
・Calculated design
The thin blade efficiently conducts heat. The hammered handle provides slip resistance, comfortable grip, and heat retention.
Self-Contained Solution, No Power Required
ONJIN needs no external power source or battery.
Only your body warmth—the most natural and sustainable energy source.
Simply hold it, and the blade warms to gently soften butter.
Elegant problem-solving without technology.
A craftsman carrying on the tradition of Tokyo Silverware dating back to the Edo period responded to bread lovers worldwide facing the "hard butter problem,"
pursuing a butter knife that maximizes pure silver's physical properties.
Minimal form born from functional necessity.
Hammered handiwork adds warmth that grows familiar with each use.
ONJIN was born.
ONJIN is not merely cutlery.
It is functional beauty that solves everyday frustrations.
For everyone who loves bread and butter.
【Specifications】
Material: Pure silver (SV1000)
Dimensions: Length 120mm × Max width 20mm
Weight: Approx. 50g
Origin: Tokyo (Tokyo Silverware)
Care: After use, wash with a soft sponge and mild detergent, then dry thoroughly. Do not use dishwasher. Develops richer character over time.
Durability: Lifetime quality.
Special Paulownia box
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※ The image is a concept image generated by AI. It differs from the actual product.
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¥51,500
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▼Return List
ONJIN (温刃) -Butter Knife
Launch Special（15% OFF）
¥48,500 （Tax Included）
Shipping & Delivery Methods
Hokkaido
¥1,440
Tohoku region
¥1,040
Kanto region
¥910
Chubu region
¥910
Kinki (Kansai) region
¥1,040
Chugoku region
¥1,180
Shikoku region
¥1,300
Kyushu region
¥1,440
Okinawa region
¥1,914
Shipping & Delivery Methods
United States
¥3,640
United Arab Emirates
¥6,610
Argentina
¥6,610
United Kingdom
¥4,960
Italy
¥4,960
India
¥7,380
Indonesia
¥3,420
Egypt
¥6,610
Australia
¥7,380
Austria
¥5,400
Netherlands
¥4,960
Canada
¥3,640
Cambodia
¥10,020
Greece
¥5,400
Kenya
¥6,940
Saudi Arabia
¥6,610
Singapore
¥3,420
Zimbabwe
¥6,940
Switzerland
¥5,400
Sweden
¥5,400
Spain
¥4,960
Thailand
¥3,420
Denmark
¥5,400
Germany
¥4,960
Turkey
¥6,610
New Zealand
¥7,380
Nepal
¥7,380
Pakistan
¥6,610
Philippines
¥3,420
Puerto Rico
¥3,640
Brazil
¥6,940
France
¥4,960
Brunei
¥10,020
Vietnam
¥3,420
Portugal
¥5,400
Macau
¥3,420
Malaysia
¥3,420
Mexico
¥3,640
Maldives
¥10,020
Mongolia
¥10,020
Jordan
¥6,940
Laos
¥10,020
Russia
¥6,940
China
¥3,420
South Africa
¥6,940
Taiwan
¥3,420
South Korea
¥3,420
Hong Kong
¥3,420
ONJIN (温刃) -Butter Knife
Early Bird Discount（10% OFF）
¥51,500 （Tax Included）
ONJIN (温刃) -Butter Knife
Regular Price
¥57,000 （Tax Included）
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