Teh O Ais Limau is a popular iced tea drink in Pulau Pinang. It is made by brewing black tea and serving it over ice with a squeeze of lime juice. The drink is often sweetened with sugar or condensed milk, depending on personal preference. Teh O Ais Limau is a refreshing and tangy beverage that is perfect for quenching your thirst on a hot day. It is a popular choice among locals and visitors.