Bring a large pan of water to the boil and cook the pasta according to packet instructions.
Meanwhile, prep your three cornered leek by washing well in cold water then cutting into slices approximately 1 inch in size.
When the pasta is cooked, drain (reserving one cup of the pasta water) then return to the pan with the pasta water. Put on a low heat and add the ricotta, pasta and three cornered leek.
Cook gently, stirring often, for 2 minutes until the sauce is well mixed and the three cornered leek has wilted.
Serve topped with three cornered leek flowers, if you wish.