Mushrooms on toast

Mushrooms are remarkably good value – a typical serving is just 15 calories.

Greggs vegan roll

Diet food from Greggs? You must be joking. But yes, it appears that if you shop with care you can find items that fit into your diet day.

KFC fillet salad

Kentucky Fried Chicken on a diet day? Try their chicken fillet salad, at 260 calories.

Beef taco

A single beef taco from Taco Bell contains 185 calories, and it’s a great choice if you’re out and about and need a quick fix.

Miso soup

No-one could describe miso soup as a filling meal, but it’s a quick and easy filler – you just add boiling water. But they are just 21 calories.

Cauliflower rice

Cauliflower rice is, simply, rice that has been ground up and can be used as an alternative to rice – at just 19 calories per 100g.

Konjac noodles

Konjac noodles are made almost entirely of water. They can be used instead of regular noodles or spaghetti, and a pack typically weighs in at just 12 calories.

Duck chow mein

The secret to making a low-calorie chow mien is to use konjac noodles, which behave like regular noodles but have virtually no calories.

Cheesy rice snacks

These little slivers of joy will set your taste buds alight – and you only need a couple of them to keep you going, at under 4 calories each.

Artichoke

They’re time consuming to eat, which means they feel more like you’re having a full meal. And they don’t break the calorie bank.