Quick answer
If you want to brew and carry cold brew coffee, choose the Ka-Ku Coffee Bottle. If you need a versatile vessel for water, tea, or juice, choose the "Can" Water Jug.
Capacity and material trade-offs
The Ka-Ku Coffee Bottle holds up to 1000ml, making it one of Hario's largest cold brew bottles. Its plastic body is lightweight and easy to clean. The "Can" Water Jug has a smaller capacity (750ml, based on product number WJCA-750-HSV) and is made of tempered, heatproof glass that can handle temperature changes from cold to hot. Your choice depends on whether you prioritize volume and portability (Ka-Ku) or material versatility and heat resistance (Can).
Brewing vs. carrying: different jobs
The Ka-Ku is designed for cold brew: you place coffee grounds in the strainer, add cold water, and refrigerate for about 8 hours. The "Can" Water Jug is a serving pitcher for water, tea, cold coffee, or juice, not a brewing device. If you want to make cold brew on the go, the Ka-Ku is the clear choice. If you just need a container to carry or serve drinks, the Can is more straightforward.
Key trade-offs to decide
- Capacity vs. compactness: Ka-Ku holds 1000ml, while the Can Water Jug holds 750ml. If you need more liquid per trip, Ka-Ku wins; if you prefer a smaller, more compact vessel, the Can is easier to store.
- Material durability and heat: The Can's tempered glass resists temperature changes and is suitable for hot drinks. The Ka-Ku's plastic body is lighter but may not be ideal for very hot beverages. Check whether you need heatproof glass for hot tea or coffee.
- Brewing capability: Only the Ka-Ku includes a strainer for cold brew. The Can Water Jug is for serving, not brewing.
Product facts
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"Can" Water Jug: Made of Hario's signature tempered, heatproof glass; size W 134× D 88× H 179mm. The glass construction allows you to use it for both hot and cold beverages without risking thermal shock.
"Can" Water Jug
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Ka-Ku Coffee Bottle: Holds up to 1000ml; plastic body is lightweight and easy to clean. The large capacity and low weight make it practical for carrying a full day's cold brew to work or school.
Ka-Ku Coffee Bottle
Which should you carry?
Best for
- Commuters who want to brew and carry cold brew coffee in one bottle
- Those who need a large 1000ml capacity for long days
Not for
- People who primarily need a heatproof pitcher for hot tea or water
- Those who prefer glass over plastic
