1. Cut potatoes into wedges.

2. Remove perforated strip from top of oven bag to use as a tie. Add flour to bag and shake well to coat. Place potatoes in bag and shake bag to coat wedges. Add butter, olive oil, garlic, paprika, lemon rind and chilli flakes. Season with salt and pepper. Close bag with tie. Shake well to evenly coat wedges.

3. Place bag on an oven tray, making sure edges do not hang over the sides. Spread out wedges in a single layer inside oven bag. Using a skewer or toothpick, pierce 6 holes in top of bag near tied end.

4. Cook in a hot oven (200°C) for about 1 hour, or until wedges are cooked through. Remove from oven. Stand bag on tray for 5 minutes. Cut slit in bag, being careful to avoid escaping steam.

5. Serve wedges with sea salt.