Anya eats out more than she used to, encouraged by the reasonable price and the profusion of eateries that offer a guilt-free meal: produce sourced locally where appropriate, and prepared in the most efficient kitchen that technology will allow.

Her neighbourhood favourite, the Low-Carb Snack Shack, is part of a cooperative of restaurants and farms. The restaurants have clubbed together and buy in bulk, guaranteeing a viable market for the local farmers. This helps to manage supply and demand effectively and efficiently, keeping costs down as well as minimising food miles.

Anya still eats a lot of imported food at home. Accurate carbon labels on every product often puts imported food grown with a very low environmental impact on an equal footing with locally produced food. Everything is still available that was available back in 2007 - perhaps there is even more variety - but local food in season tends to be the cheapest and best quality.

Her new fridge fills up once a week when the grocery delivery comes. It runs like a dream - responding to the temperature that food needs to be kept at rather than the ambient temperature, saving electricity and money. It's a much smaller fridge than her old one.

As well as the fridge she has an air-tight cupboard that's kept cool by the heat-exchanger they installed in her block of flats a few years back, so she keeps all of her fruit and veg there. Anyway, lots of food now comes in 'smart packaging' that warns her when the food is ready to eat by changing colour. As a result, she very rarely has any food waste to put into the neighbourhood composter.

Microwaving food at home is the most energy efficient way of cooking. But Anya prefers to use her gas hob, knowing that the heat that she wastes in cooking is captured, converted into electricity using acoustic heat engines and either helps to run her home, charges her car or is sold back to the grid.

And once in a while, though it's so much cheaper to eat unprocessed food nowadays, she drops into the burger chain for a hit of processed meat.