Heat oil in a large wok or saucepan over medium-high heat. Add curry paste and stir for 2-3 minutes or until warmed and fragrant. Add beef and cook, stirring for 5-8 minutes or until browned and coated in curry paste.
Add coconut milk and water, stir until combined. Reduce heat and gently simmer for 2 -2½ hours, stirring occasionally or until meat is tender and sauce is thick.
Meanwhile, place cauliflower in a large frying pan over medium heat, cook, stirring occasionally, for 7 minutes, add peas. Cook stirring until just tender. Season to taste. Stir through lemon rind, juice and chopped corriander.
Garnish with coconut, coriander leaves and chilli and serve with cauliflower rice and lemon wedges.