Put simply, no. Almond milk in and of itself does not go bad. Almond milk has a relatively long shelf life when stored correctly in the pantry or fridge. However, it can separate or curdle over time if left out on your counter for too long.  We recommend storing almond milk in the refrigerator to inhibit bacterial growth and prolong shelf life. However, few things to remember when storing almond milk. As we mentioned before, almond milk can separate or curdle over time if left out on your counter for too long. When almond milk does curdle, don't throw it out! Instead, use a hand mixer or blender to re-emulsify the separated parts.  If this doesn't work, you can also try cooking to hide the taste.