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Man in lumberjack outfit pulling a shot on the ROK EspressoGC into a white enamel hiking cup in kitchen
ROK Zero Jar filled with coffee on wooden tableROK Zero Jar filled with coffee on wooden table

Keep Fresh,
Waste Less

O2 is the enemy of taste and that great crema. Zero Jar lets you elegantly keep coffee fresh without fussy valves or mechanisms

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Coffee beans falling into ROK Zero Jar

Sized for coffee

Decant up to 250g of fresh beans or grounds. Forget fussy clips or fold-overs, just recycle the bag and admire the look of your coffee.

User pushing down ROK Zero Jar lid expelling all the air


Gently pushing down the plunger expels the air, seals the jar and keeps the contents fresh for longer. With a very satisfying hiss. Try not to play with it all day.

User pulling up the ROK Zero Jar lid

Pull to release

This is the real magic. As you pull the handle upwards our rolling O-ring releases the air-tight seal and lets the plunger rise effortlessly.

No valve to switch, just patented ingenuity to enjoy.

2 ROK Zero Jars willed with 2 different kinds of ground coffee. Each jar has a tag with the coffee variety on

Two's company

Zero jars come in pairs, so you can juggle wake-up and after dinner coffee variants and keep them both fresh. Or maybe his and hers.

2 ROK Zero Jars jar filled with rice and lentils in a kitchen. Hand picking up Zero Jar with lentils

Not just for coffee

Zero jars are great for all granular foods that suffer from oxygen damage.

Want to Store your own quality coffee at home?

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Image of the ROK Zero Jar with Coffee beans in it, on a white kitchen counter, with the words Zero Jar in bold over the top of it

Need some inspiration?

We want you to keep making great coffee, year after year. We offer spare parts and other kit to help you reach Java Nirvana.

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