In a heavy bottomed saucepan, combine the coconut milk and coconut sugar. Scrape the insides of the vanilla bean and add the seeds and pod to the mixture, if using.Bring the mixture to a boil over medium heat, stirring frequently. Once boiling, turn the heat to low and let the mixture boil slowly. Stir frequently, scraping the bottom to make sure it doesn’t burn. Continue boiling until caramel has reduced and thickened to thick, syrupy texture, about 30-35 minutes. Remember that the caramel will continue to thicken as it cools.Remove from heat and stir in oil, salt, and vanilla extract if using. If you used the vanilla bean, remove the pod and discard.Let cool to room temperature, stirring occasionally to keep the fat incorporated. Pour into a glass container.Store in the refrigerator for up to 2 weeks.