Clean the sweet potatoes and make 3 cm slices. Put them into the GN container, add the garlic, olive oil, red wine vinegar and season with salt and pepper and cajun spice. Bake the potatoes for 40 minutes on hot air mode 180°C. When done squeeze the garlic into the yogurt, season with salt and pepper. Slice the spring onion. Put the yogurt on plate and spread it all over it, top with baked sweet potatoes and garnish with sliced spring onion.