Robert Laurindo recently opened Casa da Tapioca in favela Vidigal, in Rio de Janeiro. He purchased a two-level, one-bedroom building, which includes the cafe on the ground floor. Here, he serves his grandmother's tapioca recipes to Elizangela Ferreiro, right, and her daughter, Jessica da Silva, originally from Sao Paulo, who recently moved to Vidigal. Lianne Milton for NPR hide caption

itoggle caption Lianne Milton for NPR