Does almond butter go bad?

Yes, almond butter goes bad over time. Because it contains high levels of unsaturated fats, almond butter eventually oxidizes and turns rancid when exposed to oxygen, light, and warm temperatures. Unopened natural almond butter generally stays fresh in the pantry for 6 to 12 months. Once opened, natural almond butter lasts about 2 to 3 months at room temperature or up to 6 months when refrigerated.

Signs that almond butter has spoiled include a sharp, sour, or chemical smell resembling oil paint, a darkened brown color, a harsh bitter taste, or visible mold. If natural oil has separated at the top of the jar but the smell is pleasant, the butter is still perfectly safe to eat.