Step 1

Cook the pasta in a saucepan of boiling salted water for 10 to 12 minutes, then drain, reserving a cup of the cooking water.

Step 2

Meanwhile, heat the oil in a frying pan and fry the shallots for 5 minutes until soft but not colored. Add the greens and a splash of the pasta water, cover and cook for 2 to 3 minutes.

Step 3

Melt the butter with the miso paste and blend with 150ml (2/3 cup) of the pasta water until smooth. Add to the drained pasta with the greens. Serve with lots of cracked black pepper.