Can you cook fresh puff pastry out of date?

It's not recommended to cook fresh puff pastry that is out of date. Here's why:

* Quality: Fresh puff pastry relies on the quality of the butter and flour to create its flaky layers. Over time, the butter can start to degrade, affecting the texture and taste of the pastry.

* Mold/Bacteria: While puff pastry might not have visible mold, bacteria can still grow, especially in a warm environment. Consuming this could lead to food poisoning.

* Safety: The best-before date is a guideline for food safety. It doesn't mean the food is immediately inedible, but the risk of spoilage increases after the date.

What to do with out-of-date puff pastry:

* Check for signs of spoilage: Look for mold, an off-smell, or changes in texture (like becoming sticky).

* If it looks and smells good: You can still use it, but be mindful of the quality. Consider using it in a dish where the flavor is masked, like a savory pie or a tart with a strong filling.

* If it's questionable: Don't risk it. It's better to err on the side of caution and throw it away.

Remember, food safety is paramount! It's better to be safe than sorry.