Caffeine boost: Makers of battery-powered coffee mixture arrested...https://www.reuters.com/article/us-vietnam-coffee-batteries/caffeine-boost-makers-of-battery-powered-coffee-mixture-arrested-in-vietnam-idUSKBN1HV15SHANOI (Reuters) - Vietnamese police have arrested five people suspected of using battery chemicals to dye waste coffee beans, the Ministry of Public Security’s online newspaper, Cong An Nhan Dan, said