In a saucepan, combine the stock and saffron, bring to a simmer and keep warm over low heat.
In a risotto pot or other round-bottom pan, heat the oil (2 turns of the pan) over medium-high heat. Add the pancetta and stir for 1-2 minutes. Add the onion and garlic, and stir for 1-2 minutes more. Add the rice, season with salt and pepper, and stir to combine. Add the wine and cook to evaporate. Begin adding the hot chicken stock, a few ladles at a time, stirring constantly and cooking until the liquid has been absorbed before adding more. Continue adding stock this way until the rice is al dente, about 18 minutes total.