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Carbon Farmers World
(Undergoing maintenance)


Using the resources available to us is becoming a necessity. Biochar is a resource available to anyone who has a garden.

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Carbon Farmers have been building equipment to make high quality biochar for many years in Kenya. Biochar is a valuable resource there; but is it worth making and using in a UK garden?


Those who advocate and sell biochar in the UK claim it has miracle-like properties when used as a garden soil amender. Many in the scientific community say there is no credible UK based evidence to support these claims. With your help we would like to bring more, and hopefully definitive, real-world evidence to the debate.

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It makes no sense to purchase biochar when it can be made sustainably at home, as a by-product. This approach also provides a unique opportunity to broaden the scope of the study.


We hope to answer the follow questions:


Is it practical to make biochar at home?

Does biochar make better compost in the long term?

How much carbon dioxide can you capture making biochar?

How practical is it to use the heat released while making biochar?

Can you use biochar as an alternative to charcoal in a barbecue or stove?


Biochar has enormous potential, let's find out how best we can put it to use.

Find out more

The Tawi Range

Either Tawi can be used in the biochar experiment.

Click on the + and scroll down for product information.

  • Roller Tawi

    Roller Tawi

    A distinctive, versatile outdoor stove that makes high quality super adsorbent biochar while you cook. Built from plate steel, and manufactured in the UK, it will last for generations. The three cooking surfaces are large enough to cater for around six people. Distinctive retro styling makes the Tawi Roller Stove a very novel addition to any barbecue gathering. Video of the Roller Tawi in action. Video of Roller Tawi Instructions. Included: Scraper, water tank, instruction, three fire lighters Specifications - Firebox and wood tray: 2mm plate steel. Chimney: 2mm steel plate. Hotplate: 4mm steel plate. - Water tank: Stainless steel - Suitable for use with dry wood only. Dimensions and weight (without the water tank) - Total height: 47cm. - Total length: 64cm. - Total width: 27cm. - Weight: 12kg Metal treatment: None (designed to form a decorative, protective patina) The Roller Stove is made to order. No overseas orders.
    £250.00
  • Tawi Biochar Harvester

    Tawi Biochar Harvester

    The Tawi Biochar Harvester has been especially designed to facilitate the Biochar Experiment. It produces highly adsorbent biochar with a stable carbon content >90% (when used as instructed). The Tawi Biochar Harvester can make quenched biochar, for use as a compost additive, and dry biochar, for use as a fuel. Two cooking surfaces allow the heat generated by pyrolysis to be utilised productively. The Tawi Biochar Harvester is virtually smoke-free and very easy to use once mastered. Of course you don’t have to take part in the experiment, but for those who want to, guidance notes are provided. Included: Instructions and fire lighters. Dimension: L50cm x W22cm x H45cm Weight: 7kgs Metal treatment: none (designed to form a decorative protective patina) No overseas orders.
    Sold out
    £125.00
  • Biochar Burning Stove

    Biochar Burning Stove

    This stainless steel outdoor stove is perfectly suited to using Tawi-made biochar as a fuel. It is insulated and fully controllable. It has an extremely high heat output when required; perfect for boiling. The low heat settings are ideal for barbecuing, where it can operate for up to two hour without being refilled. Smoke-free and easy to use, this stove is a fantastic addition to your outdoor kitchen. The best part; if you own a Tawi, you'll never have to buy charcoal again! (This item will be dispatched from the manufacturer to avoid additional shipping costs).
    Sold out
    £48.00

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