SHOPPING LIST: Cooking Skills: Potatoes 1, Chapter 3 (Roast Potatoes) Floury potatoes (Maris Piper) for the classic roasties. A large roasting tray, or two. Sunflower or vegetable oil, because olive oil can taste strong at high heat. Simple roast potatoes (2 portions) [ ] 400 g floury or all-rounder potatoes, peeled and cut into 5 cm chunks [ ] 3 tbsp sunflower or vegetable oil [ ] 1 pinch flaky salt Par-boiled, shaken roast potatoes (3 portions) [ ] 600 g floury potatoes (Maris Piper), peeled and cut into 5 cm chunks [ ] 1 tsp salt, for the water [ ] 4 tbsp sunflower or vegetable oil [ ] 1 tbsp plain flour or fine semolina (optional) [ ] 1 pinch flaky salt Herb and garlic roast potatoes (3 portions) [ ] 600 g floury potatoes, peeled and cut into 5 cm chunks [ ] 1 tsp salt, for the water [ ] 4 tbsp sunflower or olive oil [ ] 1 head head of garlic, broken into unpeeled cloves [ ] 4 sprigs of rosemary or thyme [ ] 1 pinch flaky salt Lighter olive oil roast potatoes (2 portions) [ ] 500 g waxy or all-rounder potatoes, unpeeled and halved or quartered [ ] 2 tbsp olive oil [ ] 1 tsp smoked paprika or dried oregano [ ] 1 pinch salt and pepper [ ] 1 lemon, juice only For the experiments [ ] About 2 kg more floury potatoes in total [ ] Extra oil, a knob of butter, and goose or duck fat if you want to try it