Indian Tomato Rice

Name: Indian Tomato Rice
Ingredients: 1 cup basmati rice, rinsed until water runs clear; 1⁄4 cup canola oil; 1 tsp. black mustard seeds; 1⁄4 tsp. ground turmeric; 6 fresh or frozen curry leaves; 3 chiles de árbol, stemmed; 2 cloves garlic, thinly sliced; 1 small yellow onion, minced; 3 plum tomatoes, cored and roughly chopped; 1⁄4 tsp. asafoetida; Kosher salt, to taste