Combine the olive oil, smoked paprika, kosher salt, chili powder, cumin, turmeric, mustard powder and cayenne pepper in a large mixing bowl.
Add the sweet potato wedges and season with black pepper.
Toss until the wedges are evenly coated.
Reserve the bowl with the remaining seasoned oil.
Place the wedges in the air fryer basket in batches without overcrowding.
Air-fry at 200°C (400°F) for approximately 15 minutes.
Shake the basket halfway through the cooking time.
Cook until the wedges are golden brown, crisp outside and tender inside.
Return the hot wedges to the reserved bowl and toss through the remaining seasoning.
For the Garlic Sour Cream Dip:
Combine the sour cream and grated garlic in a small mixing bowl.
Season with salt and freshly ground black pepper.
Stir until evenly combined.
Transfer the dip to a serving bowl.
Serve the hot sweet potato fries immediately with the garlic sour cream dip.
Notes & Wine Advice
Serving Suggestions
Serve the sweet potato fries immediately while they are hot and crisp. Place the garlic sour cream dip alongside them and add lemon wedges, fresh coriander or sliced spring onions if desired.
Recipe Notes
Arrange the wedges loosely in the air fryer basket and cook them in batches when necessary. Overcrowding traps steam and prevents the edges from becoming crisp. Cut all the wedges to approximately the same thickness so they cook evenly.
Variations
Replace the sour cream with a dairy-free alternative for a vegan version. Reduce or omit the cayenne for milder fries. Greek yogurt can replace the sour cream for a lighter dip.
Storage
Store leftover fries and dip separately in covered containers in the refrigerator for up to two days. Reheat the fries briefly in the air fryer at 190°C. Serve the dip cold and do not reheat it.
Wine Advice
A lightly sweet Riesling balances the cayenne and warm spices while complementing the sweetness of the potatoes. A crisp Sauvignon Blanc is a suitable drier alternative.