In 2015, when Maggi went off shelves over unfounded concerns about high levels of monosodium glutamate, a flavour enhancer, Nestle India Ltd.’s share in the nation’s instant noodles market went from 80 percent to zero in a month. A strategy that the consumer goods maker followed to repair the damage has paid off nearly three years later during India’s worst consumption slowdown in nearly a decade.As Nestle India’s revenue and profit ...