Yes. Just like many other packaged foods, the “best before” date stamped on the package is an estimate from the producer to guarantee that the product will maintain its prime quality prior to this date. Beyond this date, most food products are likely to be safe for consumption, unless food spoilage occurs. However, expect a decrease in quality. For coconut flour, you may expect a rancid odor and a clumpy texture. It is your call to keep it or toss it. However, if the package is damaged, or any signs of spoilage are seen, it is always suggested to stay on the safe side and discard the product.