Ademar de Barros Moreira owns the legendary french fry stand Batata de Marcehal in Rio de Janeiro. He’s been selling his famous fries for over 30 years, taking enormous pride in selecting the best potatoes and delivering the highest quality food. Ademar worked his way up as a vendor over many years, selling different foods across the city. He can sense the quality of a potato before he even touches it, going through several tons each week.