A report published today on a plan for a national food strategy did not just deal with what we eat, but also how we produce it in a sustainable way.

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If we are to ensure that farming can become carbon neutral, meat production will have to fall by almost a third.

But there are other ways that farmers can cut back the methane emissions from cows.

The use of garlic in their feed, for example, could prove to be a crucial tool. We went to a farm in Lancashire to find out more.

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Producer: Nanette van der Laan
Cameras: Yasmin Morgan-Griffiths; Dai Baker
Editor: Tim Benthem