Creating Dal Tadka is straightforward if you follow these simple steps:

1. Rinse the Lentils: Start by thoroughly rinsing the split yellow lentils under cold water until the water runs clear.
2. Cook the Lentils: In a pressure cooker or pot, add the rinsed lentils, water, turmeric powder, and salt. Cook until the lentils are soft and mushy (about 3-4 whistles in a pressure cooker or 20-25 minutes in a pot).
3. Prepare the Tempering: In a separate pan, heat ghee or oil over medium heat. Add cumin seeds and let them sizzle for a few seconds.
4. Sauté Onions: Add the chopped onions to the pan and sauté until they turn translucent.
5. Add Ginger-Garlic Paste: Stir in the ginger-garlic paste and green chilies, cooking for another minute until fragrant.
6. Incorporate Tomatoes: Add the chopped tomatoes and cook until they soften and blend with the onion mixture.
7. Add Spices: If using, sprinkle the red chili powder and garam masala into the pan. Stir well to combine.
8. Combine Lentils and Tempering: Once the lentils are cooked, add them to the pan with the tempering. Mix well and adjust the consistency by adding water if necessary.
9. Simmer: Allow the mixture to simmer for 5 minutes, letting the flavors meld together.
10. Garnish: Remove from heat and garnish with fresh coriander leaves and a squeeze of lemon juice, if desired.

Now your Dal Tadka is ready to be enjoyed!