Wash the sweet potatoes, slice them and let them soak in clear water for about an hour.
Preheat the oven to 220 Grad (430 °F - static upper and lower heat works best in my opinion)
Drain the potato slices and dry them properly.
Mix 3 tbsp of olive oil, 1 tsp paprika powder, a small tsp cumin, a tsp harissa and/or chili flakes and a dash of salt. Marinate the sweet potato slices with this mixture and add 1-2 tbs polenta in the end. Spread the fries evenly on a baking sheet.
bake the sweet potato fries for 40-45 minutes at 430 °F till crispy. Flip them over half way.
For the delish dip, mix soy yoghurt with 1 tsp, 1 tsp hot mustard, 2 tbsp lemon juice, salt, pepper and chopped cilantro. Season the sauce with lemon juice and salt to your taste.
Wash and chop 2 spring onions, the pepperoni (or bell peppers), cilantro and cucumber.
Put the sweet potato fries in a bowl, cover with the veggies, sprouts, cilantro and drizzle with the yoghurt-tahini sauce. You may also add some more salt. Enjoy!