Scotsman -- Cakes which may help you burn off calories could soon be available in the UK. A slimming aid, found in chilli peppers, speeds up the body’s metabolism and could be added to foodstuffs, including desserts, a food company claims. The extract, dihydrocapsiate (DHC), is one of several chemical compounds known as capsinoids found in a particular variety of chilli, called CH-19 sweet.