This is a very simple soup to make once you have all of the ingredients ready. Purchase a good quality red pepper paste from a Turkish store. Look at the ingredients and make sure it only contains red peppers and some vegetables along with vinegar. It’s best to puree the soup with a hand blender and then strain the soup into a clean pot resulting in a very smooth soup. You can keep it a bit rustic by pureeing and not straining the soup.
You can also add a little bite to the soup by using up to 1/2 spicy red pepper paste of the same brand as the mild paste. You can substitute the red pepper paste by adding a bit more tomato paste and using a spicy paprika to taste.