Leaf is a bottle shop, taproom and restaurant run by the Craft Beer Base group to showcase their beers. Ten of their fifteen taps are devoted to CBB's innovative series of Osaka-brewed beers, with the five guest taps set aside for domestic and imported beers from breweries like Revision (Nevada) and Stillwater (Maryland). There's also a fridge stocked with an ever-changing roster of around fifty canned and bottled beers.

The food menu is focused on beer-friendly bar fare like grilled sausages, charcuterie platters, pizzas, fish & chips, and beer-steamed mussels. French fries come with garlic sauce and Parmesan cheese.

The shop is located on the second floor of the Gran Green Osaka mini shopping mall in Umekita Park, and it can be reached via skybridge from the Grand Front Osaka North Building.