Few dishes are as ubiquitous on Spanish tapas menus as patatas bravas. These fried potatoes are made special by the slight heat of the brava sauce and sometimes a dollop of creamy mayonnaise. Though the recipe varies from bar to bar, the most traditional brava sauce is made simply from sweet and spicy paprika in chicken broth thickened with flour. This adaptation draws on those flavors but uses tomato as a base.