Peel and thinly slice 1 brown onion. Heat 1 tbsp olive oil in a medium-sized pot over medium-high heat. Cook the onion, stirring regularly, for 3-4 minutes, until softened. Add 1 tsp cumin and cook, stirring, for 1 minute or until fragrant. Stir 1 cup basmati rice in, add 310 ml chicken stock and bring to a simmer. Reduce the heat to low and cook, covered, for 12 minutes or until the rice is tender and the liquid is absorbed. Remove from the heat and stand, covered, for at least 5 minutes.