Purchase your ingredients at an Asian Market. They are much less expensive there and you will have more selection than in a supermarket. A tub of curry paste will make many recipes so the initial investment in ingredients goes a long way. Add any meat that you like, or use tofu for a vegetarian dish.
This dish is fast to prepare. A bit of chopping and then everything simmers in the pot for a while; much faster than most of the soups I make. Steam some Jasmine rice and you're good to go. I wish I had some green garnish. It would have looker so much better. Believe me, it tastes great.