Fill your cupboard with the unassuming staples proven to tighten your bel
i/ MUSTARD Make your office lunch work harder by adding a teaspoon of mustard to your ham sandwich, which Oxford Brookes University found boosts metabolism by 25%.
ii/ SOY SAUCE The umami flavour of soy can put the brakes on sugar cravings, according to journal Appetite, helping you make healthy choices throughout the day.
iii/ VINEGAR Ignore the Instagrammers taking shots of apple cider vinegar and splash malt on your chips instead. Its acetic acid content is proven to keep you sated.