Curly kales deteriorate more quickly than green ... ribs of curly kale before you chop or shred the leaves. For best results, either cook very briefly in a large volume of ready-boiling water ...
At the same time, bring a pot of water to a boil and drop in the pasta to cook for 2–3 minutes until just tender. Drain the pasta and stir it into the kale with the lemon zest and juice ...