Hong Kong authorities have discovered traces of a toxin in four batches of baby milk formula products previously recalled by Nestlé. In a statement issued on Saturday evening, the Centre for Food Safety said the Swiss food giant had recalled about 96,000 tins of affected products due to the possible presence of cereulide, a toxin produced by Bacillus cereus, found in the ingredients. The centre had issued a warning in early January when the Swiss food giant’s Hong Kong unit began recalling 21...