Heat oil in a pressure cooker, add onion, carrots, pumpkin, green chillies, salt and garam masala powder and mix. Add 3 cups water and mix. Cover the cooker with the lid and cook under pressure till 3-4 whistles are given out.
Open the cooker when pressure reduces, strain the stock into another bowl and reserve. Cool the solids and transfer into a mixer jar. Add orange juice and blend into a smooth puree.
Transfer the reserved stock and puree into the cooker, adjust salt and bring to a boil. Transfer into a serving bowl. Garnish with deep fried spinach, sprinkle sesame seeds, drizzle a little fresh cream and serve hot.