First, bring a pot of water to the boil in a medium saucepan, and add the pasta. Reduce to a simmer and allow to cook for 8-10 minutes
2
Meanwhile, peel and finely slice the onion, and very finely chop the chilli and parsley. Add to a frying pan with the lemon juice and oil, and cook on a medium heat to soften the onion
3
When the pasta is cooked, remove from the heat and drain. Quickly stir the yoghurt and fish paste into the onions to warm through
4
Tip the pasta into the pan, coat with the sauce, and serve. Garnish with extra parsley and lemon juice if desired