Veggie Burgers with Homemade Buns | Sulten

Ingredients

• 0.5 pack dry yeast
• 2 tsp salt
• 3 dl lukewarm water
• 1 x sweet potato
• 2 clove garlic
• 1 x red onion
• 400 g kidney beans
• 1 tsp sriracha
• 1 tsp black pepper
• 7 dl plain white flour
• 2 dl sour cream
• 0.25 pack rocket
• 1 x tomato
• 3 dl plain white flour