Heat the olive oil in a large pot over medium heat. Add the onion and cook 5 minutes until soft. Add the ginger, garlic, and sweet potatoes and cook until fragrant, about 2 minutes. Stir in the garam masala, turmeric, and cayenne and cook another minute.

Add 3 cups water. Season generously with salt. Bring to a boil over high heat, then reduce the heat to low. Cover and simmer 15-20 minutes, until the sweet potatoes are tender.

Stir in the coconut milk and kale, cook 5 minutes. Remove from the heat and add the cilantro.

Make the chili oil: Heat the olive oil and garlic in a small saucepan over medium-low heat. Cook, stirring occasionally until the garlic is fragrant, 5 minutes. Stir in the sesame seeds, chili flakes, and cumin seeds, cook 30 seconds. Remove from heat and stir in paprika. Season with salt. Let cool.

To serve, divide the rice among bowls and ladle the stew overtop. Spoon over the chili oil and top with cilantro. Serve with Naan on the side.