2 tablespoons Ginger-Garlic Paste, recipe follows, or 2 teaspoons grated ginger
1 tablespoon ground coriander
1/4 teaspoon turmeric
1 cup water, divided
2 tablespoons peanut oil
1 large serrano pepper, split down the middle leaving halves attached
1 teaspoon cumin seeds
1 small head cauliflower, cut into small florets
1 russet potato, peeled and cut into 1/2-inch cubes (similar size to cauliflower)
Kosher salt
2 tablespoons freshly minced cilantro leaves, to garnish
Ginger-Garlic Paste:
1/2 cup cloves garlic, whole
1/2 cup fresh ginger, peeled, cut into 1/2-inch slices
1/4 cup canola oil