Actor Michael Sheen, with a little help from Jamie Oliver, cooks Welsh lamb cawl on Jamie and Jimmy’s Friday Night Feast.

Jamie says: “This Welsh lamb cawl is left to chill overnight before serving, but if you want to let the flavours develop and mature, leave it in the fridge for up to three days.”

The ingredients are: sea salt, freshly ground black pepper, 1 onion, 1 kg lamb neck fillet, bone in, cut into 5cm chunks, 1 kg swede, 2 carrots, 3 Maris Piper potatoes, 2 parsnips and 3 large leeks.