Add the olive oil to a large pot or rondeau over medium-low heat. Pour in the onions and cook for 8-10 minutes or until lightly browned and translucent.
Next, pour in the rice and toast for 3 to 4 minutes while constantly stirring. Deglaze with the wine and stir constantly until all of it has been absorbed into the rice.
Add 4-8 ounces of warm chicken stock at a time to the rice while constantly stirring until it has been absorbed, and then repeat the process until the arborio rice is cooked to al dente.