Freezing: Freeze cooled soup in airtight containers or freezer bags for up to 3 months, leaving a little room at the top for expansion. Thaw overnight in the fridge, then reheat on the stove. The coconut milk can separate a bit after freezing, so give it a good whisk (or a quick blend with an immersion blender) to make it smooth and creamy again. If you’re adding shrimp, freeze the soup plain and stir in the shrimp when you reheat, since cooked shrimp can turn rubbery after freezing.
