Melt the butter in a large pan, add the onion and gently sweat for about 10 mins until really soft. Meanwhile, put 100g peas into a food processor with a ladleful of stock and whizz until completely pured.

Stir the rice into the onion, increase heat to medium and sizzle the rice for 1 min. Pour in the wine, then bubble and stir until completely absorbed. Continue cooking like this, adding a ladleful of stock at a time, and stirring continuously until the rice is tender and has a good creamy consistency this will take 20-30 mins.

Stir in the pured peas, remaining peas, Parmesan and some seasoning, then turn off the heat and leave to stand for a few mins. Give the risotto a final stir, spoon into shallow bowls and top with some pea shoots and a drizzle of olive oil, if you like.