1. Preheat the oven to 400°F (200°C) and line a roasting tin with parchment paper.

2. Prick the sweet potatoes with a fork and roast them for 45–60 minutes, or until soft. Once cooled, peel and mash them until smooth.

3. In a large mixing bowl, combine the mashed sweet potatoes, flour, and a pinch of salt (if using). Mix gently until a soft dough forms.

4. Dust a clean surface with flour and roll the dough into long ropes. Cut into 1-inch pieces and press each piece with a fork to create ridges.

5. Bring a large saucepan of salted water to a boil. Add the gnocchi in batches, cooking until they float to the surface, about 2-3 minutes. Remove with a slotted spoon and drain on a kitchen towel.