Brazil's coffee sector is going through a stinky time amid punitive US tariffs but a specialty coffee that passes through the digestive tract of the exotic Jacu bird is emerging from the muck-flinging without undue distress. US President Donald Trump imposed a 50 percent tariff on Brazilian goods in early August, amid a spat with Brazil's leftist leader Luiz Inacio Lula da Silva. It was a powerful blow to Brazil's premium coffee brands, which had Americans as their most avid consumers. But as Brazil’s premium coffee exports began to fall sharply, one peculiar brew defied the downturn by appealing to Japanese, British and, increasingly, Brazilian consumers, hinting that the country's specialty coffee future may depend on reaching beyond its biggest...