Peel and finely chop or grate the onion, garlic and ginger.
Wash the tomatoes, remove the stalk and cut into coarse pieces.
Heat oil in a pot and fry onion, garlic and ginger. Add spices, tomato paste and harissa paste and roast.
Alternatively, you can use spice seeds and roast them in a pan without fat until it smells. Then put the spices in a container with the onion, garlic, ginger, tomato paste and harissa and puree everything into a creamy paste.
Add the tomatoes to the spice paste, sauté briefly, pour in water and simmer gently with the lid closed over medium heat for about 15 minutes.
Finely puree tomato soup with a hand blender until creamy.
Drain and rinse white beans, add to soup and let steep briefly. Season with salt to taste.
Wash and finely chop the mint.
Za'atar croutons
Cut toast or bread slices into cubes, mix with oil and za'atar and toast in a pan until crispy on all sides.
Tomato soup with white beans garnish with za'atar croutons and chopped mint.