Add toor dal, malabar spinach, onion, tomato, green chilies, garlic, tamarind, turmeric powder, and water into the pressure cooker. Pressure cook on medium heat until 5 or 6 whistles. Once the pressure naturally releases, gently mash the cooked ingredients. Add salt and adjust consistency if necessary by adding water and allow the dal to simmer for 4-5 minutes (on lowest heat)
Heat oil in a small pan on medium heat. Add mustard and cumin seeds, and allow them to pop & sizzle. Then add curry leaves and Hing and turn off the heat.
Pour this seasoning over the dal and mix. Turn off the heat.
Serve malabar spinach dal with rice/quinoa/millet/dosa, along with a dollop of ghee. Enjoy!