What's the best way to store this bar to keep the nuts and corn chips crunchy?

To preserve the crisp texture of the nuts and corn chips, store the unopened bar in a cool, dry place away from direct sunlight and strong odors. A kitchen cupboard is ideal. Avoid storing it in the refrigerator, as the cold can cause condensation when the bar is taken out, which may soften the crunchy components and cause the chocolate to 'bloom' (develop a whitish coating that is safe to eat but affects appearance and texture). Once opened, it's best to consume the bar within a day or two for optimal freshness and crunch. If you need to save part of an opened bar, wrap it tightly in its original foil or place it in an airtight container at room temperature. Heat is the main enemy—never leave it in a hot car or near a stove. The high-fat content from the chocolate and nuts means it can go rancid over a very long period, so observe the 'best before' date on the package.