Preheat a 3-quart sauce pan over medium heat. Add the avocado oil and heat until shimmering. Add the onion, season with a pinch of salt, and cook, stirring, until soft and translucent, around 4 minutes. Add the garlic and turmeric and cook, stirring, until fragrant, around 1 minute. Add the rice and cook, stirring, until fully coated in the turmeric. Add the chicken broth, raise the heat to high and bring the liquid to a steady simmer. Stir the rice to break apart any clumps, cover the pot with a lid, lower the heat to the lowest setting and cook, undisturbed, for 20 minutes. Remove the pot from the heat, keep the lid on and let it sit for an additional 10 minutes before serving.