Add the can of coconut milk and approx 1/2 a can of water (you can add more later if you feel like it’s too thick). Add the fish sauce and torn kaffir lime leaves.
Simmer for 5-10 minutes. When everything else is 5 minutes away from ready, add the broccolini and simmer until tender but still a little crunchy. Add the roasted vegetables. Add a little more water if needed to reach desired thickness. Taste for seasoning and add extra fish sauce or chilli if desired.
The quantities here make enough to serve 3-4 people (3 large appetites, 4 small!) and enough paste to freeze half for another time. If serving 6, use all the curry paste and double the remaining ingredients.