To relieve wet and dry coughs for 12 hours. start the relief. ditch the misery. let's end this. ♪ all right. people have their vitamix, juicers, grain mill. brace yourself for the next food craze. >> grandma might have had it right all along. it's called bone broth. it's attracting a whole new generation of fans. here's abc's juju chang. >> reporter: it's a cup of hot steaming deliciousness. some say it's the new juice craze and may someday replace your afternoon cup of joe. >> better than coffee. >> reporter: it's bone broth. your standard chicken or beef broth. the kind mom makes when sh...