Heat butter and oil in a saucepan.
Add garlic, cumin and black peppercorns. Fry them on medium heat till the garlic slightly changes colour.
Add sliced onions. On medium heat, fry them for about 5-6 minutes, OR till they turn slightly brown.
Add tomatoes. Fry for a minute.
Add water/vegetable stock and salt.
Add moringa leaves.
Add coriander powder and turmeric powder. Boil on high heat for about 10 minutes.
Then, blend the mixture.
Pass it through a strainer to separate the clear soup from the fibrous part.
Boil the soup for a minute or two. Taste and check salt and pepper.
If the pepper feels less, add white pepper powder.
Add about ½ tsp of ghee per serving and serve hot.