Firstly, heat 1 teaspoon of oil in a Kadai. Add cumin seeds. Let them splutter.
Add chopped spinach and salt, then sauté for 2-3 minutes until the leaves are wilted and cooked well. Let the mixture cool before adding it to the yogurt.
Whisk the yogurt (or curd) in a large mixing bowl. Add the sautéed spinach mixture to the yogurt.
Then add the spices, such as roasted cumin powder, black salt, pepper, and regular salt. Mix well. At this stage, taste to ensure the seasoning is balanced.
Prepare the tempering by heating 1 teaspoon of oil. Once hot, add mustard seeds, red chilies, and curry leaves, and let them crackle for a few seconds. This step is optional.
Pour the tempering over the palak ka raita. Palak Raita is ready, Serve chilled.