Sweet potato and Roast Capsicum Soup

Ingredients

• 1 onion
• 1 large (or 2 small) orange sweet potato
• 1 large red capsicum
• 1 large ripe tomato
• 2 tsp (or even more) sambal oelek
• 1 tsp smoky paprika
• 3/4 glass dry white wine
• 2 cups veg stock
• olive oil
• walnuts
• 1 handful beetroot leaves with veins removed (or any awesome greens)