In a small saucepan over medium heat, warm up the coconut milk. Add the coconut sugar (if using) and salt, whisking until completely dissolved.

Continue heating to a simmer whilst whisking frequently for 30 minutes, or until reduced to about 1 1/2 cups.

Pour the milk mixture into your blender. While the blender is running at low speed, add the xanthan gum. Blend for 1 to 2 minutes, until completely smooth. Switch to a higher speed if needed.

Transfer the thickened milk to a storage container and let cool completely before sealing. It will thicken a little more as it cools.

*Start with less sweetener if you like, then taste the milk after 10 minutes and add more sweetener if needed.

**Use another vegan sweetener such as raw cane sugar, agave nectar, or brown rice syrup. Start with 1/3 cup when using liquid sweeteners and add more to taste.

***Switch to almond, coconut (in the carton), rice, or soy milk. Use about 2 cups and reduce it down to just over 1 1/2 cups.

****Particularly useful with rice or soy milk: for extra flavour, blend in 1/2 teaspoon of vanilla extract. You can also add flavour with coconut oil; start with 1/2 tablespoon and add more to taste.