Put coconut milk, sugar, tapioca starch, xanthan, agar agar, nutritional yeast, and salt in a medium saucepan, and cook on medium heat until the sugar melts. Bring to a boil, reduce to medium-low heat, and cook until the mixture thickens slightly. Remove from the heat, add vanilla extract, turmeric, cardamom, ginger, and allspice and mix well. Allow cooling a little for about ten minutes.