The most surprising thing about New York Fashion Week this year was n't what the models were wearing , but what they were drinking . The elixir on every fashionista 's lips was bone broth , which is being sold by the cup from a hip new Manhattan shop . Aficionados claim that it is rich in amino acids - the building blocks of protein - calcium and collagen , and that drinking it will do everything from warding off illnesses to curing joint pain , and giving you healthy skin , nails and hair . And at just 86 calories per cup , it 's a very slimming lunch option . It 's catching on here , too - celebrity chefs Jasmine and Melissa Hemsley , whose healthy cookbook The Art of Eating Well knocked Jamie Oliver and Mary Berry off the top of the Amazon charts , advocate ladlefuls of bone broth in everything from stews to scrambled eggs . Making it could n't be easier : simply add 2-3kg of bones from any beef , lamb or chicken carcass to a pan of water with a couple of onions , leeks , carrots and celery sticks . Add a tablespoon of peppercorns , a bay leaf and a dash of cider vinegar and simmer for up to 24 hours . It may sound like old-fashioned stock , but fans claim bone broth is different because it simmers for eight hours longer , which helps break down the protein you get from the bones . But Sian Porter , spokesman for the British Dietetic Association , is n't convinced . 'Bone broth does contain nutrients , minerals and vitamins , but in pretty low quantities . You 'd get far more goodness from just eating meat . ' However , she says , making your own stock is 'certainly better than buying it in a cube , as you can control what goes in it ' . Bone broths have traditionally been prescribed for colds , flu and digestive health , says Laura Tilt , a registered dietitian . 'The main protein in bone broth is gelatine . Gelatine supplements have been shown to improve pain and stiffness in osteoarthritis sufferers , but whether you get the same benefits from broth is unclear . ' So is bone broth a magic bullet for superhuman health and supermodel looks ? Probably not . But is it much better for you than a supermarket-bought stock cube ? Almost certainly .
New York Fashion Week models were drinking bone broth . Aficionados claim that it is rich in amino acids , calcium and collagen . And at just 86 calories per cup , it 's a very slimming lunch option .