Peel the onions, then halve them and cut them into wedges. Tip the onions into the large frying pan along with a little more olive oil and a big pinch of salt. Fry for 5 mins, until golden. Tip your onions into the roasting tin with the lamb. Add the fresh oregano, sage and rosemary. Cut the bulb of garlic in half horizontally and add it to the tray. Pour over the chicken stock and the white wine. Cover the tray with foil. This ensures your meat will steam and get extra tender. Cook for 3 ½ hours.

To make the salsa, finely chop the herbs and anchovies and add them to a bowl. Finely slice the spring onions and add along with the capers, mustard, and white wine vinegar. Season well and set aside.

Drain the beans, then add a handful (approx 1/2 a tin or 1/3rd of a jar) into a blender and blitz, or add to a bowl and mash them as much as you can. Mix the blitzed beans with the rest of the drained beans in a bowl.

Remove the lamb from the oven and remove the foil, the lamb should be melting off the bone. Very gently lift the lamb out and place it onto a baking tray. Turn the oven up to 180°C.

Drain the onions through a sieve into a large saucepan. Remove the woody stalks from the sieve and discard them. Tip the jammy onions back into the roasting tray along with the bowl of beans.

Use a spoon to skim the fat from the surface of the cooking liquid in the large saucepan, you want to remove as much of the clear fat that will be sitting on top of the brown cooking liquid, (add it to a bowl and save it for roasting potatoes) then add 150ml of the cooking liquid to the tray of beans, season well.

Slide the lamb and the beans back into the oven and cook for 30 mins, until the lamb is golden and crispy in places.

Meanwhile, put the saucepan with the rest of the cooking liquid over a high heat and bring to the boil, cook until it boils down to the consistency of a loose gravy. Taste and season to taste.

Whisk the crème frâiche with half of the Parmesan and lemon zest. Season with salt and pepper.

Remove the lamb and beans from the oven and set the grill to high. Set the lamb aside to rest. Add the crème frâiche mix into the beans, then grate the rest of the Parmesan over the top. Slide the beans under the grill and grill for 15 mins, until golden and bubbling.

To serve, spoon the reduced cooking liquor over the lamb, reserving some to serve. Serve with the cheesy beans and salsa.