Dairy & Eggs

Unsweetened Almond Milk: Storage & Shelf Life

Unsweetened almond milk lasts 7-10 days once opened, a fairly typical window for a refrigerated plant-based milk, though shelf-stable, aseptically packaged versions (sold unrefrigerated until opened) can last considerably longer unopened, similar in principle to how a shelf-stable dairy milk carton is packaged differently from a standard refrigerated jug.

Freezing isn't recommended, since almond milk separates noticeably once frozen and thawed — its emulsion, already less stable than dairy milk's naturally occurring one, doesn't hold together the same way through the ice-crystal disruption of freezing.

Because almond milk lacks dairy milk's natural preservative-adjacent properties (like a slightly different pH and protein structure), a carton nearing the end of its window can turn noticeably faster than dairy milk once it starts to go — checking the smell and looking for any thickening or curdled texture before using an older carton is a reasonable habit.

Because unsweetened almond milk has less body than dairy milk, a loosely closed carton lets in fridge odors more readily, which shows up as an off flavor before any visible spoilage sign appears.

Because almond milk has less inherent body than dairy or soy milk, the small amount of almond solids it does contain settles out more noticeably, so a shake before pouring keeps it consistent glass to glass.

Aseptic packaging is what lets an unopened almond milk carton sit safely in a pantry for months rather than the fridge — the same sterilization process used for shelf-stable juice boxes.

Almond milk that pours out thick, chunky, or separated in a way a good shake doesn't fix has gone bad and should be discarded rather than used.

Because almond milk's fat content is much lower than dairy or even oat milk, it separates less dramatically overall, though the small amount of settled almond solids still benefits from a shake before each pour.

Freezing unsweetened almond milk is possible for a smoothie base, but the thin texture separates noticeably on thawing, making it a poor substitute for a fresh pour into coffee or cereal.

A carton that's been left out on the counter for more than a couple of hours after opening should be treated with the same caution as dairy milk, despite containing no dairy itself.