Heat butter in a pressure cooker and sauté bay leaf until aromatic.
Add garlic, ginger, and shallots; sauté until softened.
Add beetroot, carrot, tomato, and salt; sauté for 2 minutes.
Add water and pressure cook for 3-4 whistles.
Allow to cool completely before opening the pressure cooker.
Remove bay leaf and blend vegetables until smooth.
Transfer the blended paste to a pot, add reserved cooking water, and mix well.
Bring to a boil and stir in crushed pepper.
Serve hot, garnished with cream and fresh mint.