First keep tomatoes on a gas roaster and roast on low flame. When tomatoes become soft inside turn off the flame. Now remove skin of tomatoes. Similarly roast onion on low flame.
Take tomatoes, onion and ginger in a blender and make a puree. Sieve this puree. Heat butter in a pan and pour puree to it. Boil it for 5 min.
Now add sugar, salt and black pepper powder. Now make a slurry of cornflour and water and add to it. Cook for 2 min more.
For croutons take bread slices and remove edges of it. Now cut it in small squares or any shape. Heat oil in a pan and fry the croutons. Enjoy smoky flavour tomato soup with croutons.
