How to keep focaccia fresh

There is nothing better than warm, crispy, and fresh focaccia. So, make the most out of it when it is still warm. Nevertheless, focaccia can be kept at room temperature for a few days. If you put your focaccia on the counter in a plastic bag or wrapped in foil to preserve it from growing stale, be aware that the crust will suffer from the moisture trapped inside. It's not dissimilar to ordinary bread. However, if it is a fancier version, perhaps with fresh tomatoes, olives, or other fresh vegetables on top, refrigeration is definitely the best option. After baking, those vegetables will still be fairly moist, making them susceptible to mold growth.
Where to store it
Focaccia should be kept in a cool, dry place in your kitchen. If not on the counter, tuck it away in a cupboard or a deep drawer.
Freezing
Freezing the focaccia delays the staling process significantly and reheating it in the oven or toaster actually re-gelatinizes the starches, making the focaccia springy and crunchy once more. Place your focaccia in a tightly sealed zip-top bag and freeze it, pressing out as much air as possible.
How to defrost focaccia 
For a baker, thawing focaccia in an oven or toaster is the best way to defrost it. The benefits of defrosting in an oven are that your focaccia comes out warm and with a crust.
To reheat focaccia in the oven
Preheat the oven to 380 degrees and place the focaccia on a baking sheet. Sprinkle a few drops of water on the focaccia to help rehydrate it and bake it for 6-8 minutes or until warmed through and crispy.
To reheat focaccia in the toaster
Toasting the focaccia is also a great way to warm it up. You may also make this from frozen, eliminating the need to wait for the focaccia to defrost. Simply place the slice in the toaster for about 2-3 minutes.
We do not recommend reheating the focaccia in the microwave. A microwave will ruin the focaccia and make it a chewy mess.
The bottom line: If you preserve your focaccia this way, we will guarantee you, that you will be able to bake it back to life!