Chania Szewczyk Chagas and Rafael Arruda have built Emporio do Azeite into Brazil's leading online retailer, with a focus on local extra virgin olive oil. (Photo: Andrea Lanz) Trending Summary Rio Grande do Sul in Brazil is known for its agricultural innovation and food-industry entrepreneurship, with a history of Italian immigrants introducing vine cuttings leading to wine production and a dentist turning the region into Brazil’s chocolate capital.