Home Food service Coffee shop Old Hen Coffee announces new Cold Oat Coffee Food serviceCoffee shopCountrySingapore Old Hen Coffee announces new Cold Oat Coffee By Tan Heng Hong - 9th July 2020 FacebookTwitterPinterestWhatsAppLinkedinEmailPrintLINEViber Image from Old Hen Coffee Old Hen Coffee, a specialty coffee outlet in Singapore, has announced the launch of vegan-friendly oat coffee. This dairy-free and unsweetened cold brew coffee with oat milk Cold Oat Coffee (330ml) is now available. The price is SGD 7.90 per bottle.