Pumpkin Pasta with Walnuts and Lemon

This unusual dish caught my eye because of the combination of ingredients I wouldn't have thought went together: walnuts, pumpkin, cream, sage, and citrus zest. I can perhaps imagine putting three of these things together (pumpkin, cream, and sage, maybe; or walnuts, pumpkin, and sage) but all of them at once sounded delicious.

Combinations like this characterise Yottam Ottolenghi's recipes for me. They are unexpected puzzle pieces that you suddenly know will fit together perfectly into an incredible dish.