Trà chanh
On warm evenings the pavement beside St Joseph's Cathedral in Hanoi fills with rows of tiny plastic stools, and nearly everyone is holding a tall glass of trà chanh, cheap green tea poured over ice with a squeeze of lime and plenty of sugar, sipped with a saucer of sunflower seeds while the city's scooters roar past. It is sharp, sweet and very refreshing. Chef's tip: brew the tea in water just off the boil, around 80 °C; boiling water makes green tea bitter.



