3 cups coconut milk (or other non-dairy milk)
1/2 cup organic sugar- or sweeten to taste with agave
Stir ingredients together in a sauce pan and heat gently; cook slowly over low to almost medium heat, stirring constantly, until the volume is reduced to about 1 cup.
Add some vanilla extract to taste, if you like; and a pinch of sea salt, if desired.
Cool the condensed milk and refrigerate if not using right away
As above, but omit the sugar and pour the milk into a saucepan; cook gently over low to medium heat, stirring until the coconut milk is thickened and reduced to 1 and 1/2 cups. Cool. Refrigerate.