2) Now add the beef and stir fry for 2 minutes, then season with the fish sauce, soy sauce and sugar.
3) Add the betel leaf and stir fry for a further minute.
4) Transfer to a plate and garnish with sliced chilli and coriander.
5) Serve with jasmine rice.
When dicing lemongrass, always use a nice heavy sharp knife. If you have another one use two simultaneously.
Do not discard the tip of a lemongrass stalk, steep it in hot water and drink it as lemongrass tea.