Let's prepare all the veggies first. Finely chop garlic cloves and chili peppers. Wash all the vegetables, then: dice the green pepper, cut the mushrooms into halves or quarters, chop the cauliflower into regular bites and finally slice the leeks.
Heat a large pan then add the ground spices (curry, turmeric and coriander seeds), chili peppers and garlic. Stir on medium heat for roughly a minute in order to bring up all the flavours.
Once your spices have roasted add the chopped veggies and coat them into the spice mix.
Season with salt and pepper, add a spash of water and sauté for 5 minutes.
Add the coconut milk, lower the heat, cover with a lid and simmer the curry for 15-20 minutes (depending on how you like the veggies to be: less time for a cruncky bite, more for softer texture).
Adjust the spices and the saltiness or sweetness and serve with boiled rice and a nice sprinkle of black sesame seeds.