Finely chop the chilli and make the dressing by combining all the ingredients.
Cook the spaghetti according to pack instructions. Three minutes before it is cooked add the mangetout cut into thin strips and then drain into a colander.
Meanwhile, fry the prawns with a drizzle of oil for 2 minutes until warm.
Place the spaghetti into a large serving bowl. Add the prawns, cucumber (cut into strips) and shredded spring onions, drizzle over the dressing and mix together well.
Serve immediately, with coriander.
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