Fire sprinkler systems are triggered by extreme heat and can quickly extinguish a fire in the room where it started. You've probably seen a number of movies where a small amount of smoke triggers all of the sprinklers in a building, soaking everyone and everything inside.
How Long Coconut Milk Lasts. Coconut milk should be used within a week to ten days after being opened. While you can still drink it after ten days, it wonât be nearly as fresh as it was within the first week after opening. If you purchase a container of coconut milk and do not open it, abide by the expiration date that is printed on the container.
Because of all the additives in commercial almond milk, it DOES last much longer than homemade almond milk (which only keeps 4 or 5 days - I've used it up to a week after making it). If you are interested, it's much less expensive to make it yourself and you'll end up with the pulp you can use for baked goods.