To a medium-size saucepan, add vegan butter and let it melt on medium heat. Then add brown sugar, maple syrup, the rest of the unsweetened almond milk (4 tbsp), rum (or bourbon), a pinch of sea salt, and corn starch slurry. Constantly mix with a whisk and brink it to boil. The let it boil on medium/lower heat until it thickens. Turn of the heat, add pecans to the mixture and mix together.