Barry Randall opened his Randall Coffee Roasters in the summer of 2017 in the Mercado Vallehermoso, a gourmet market in Chamberí that features small producers selling a wide range of ecological and artisanal products on the ground floor of the building. At the stand, you can sample a variety of Randall’s coffees including espresso, filter and homemade cascara soda. The market food stalls are great for a tasty lunch or dinner.