Heat olive oil in a large pot. Add cumin seeds and let them splutter. Now add chopped onions and fry them for a minute. Add roughly chopped garlic and saute them for one minute more.
Now add chopped potatoes along with 1-2 cups of water. Add salt as per taste, cover the pot with a lid and let the ingredients cook for 15-20 minutes.
Now add fresh cream to the soup and mix it well with the ingredients. Cook for two minutes and turn off the flame.