As an expert in both sommelier and brewing, I can confidently say that bourbon does not significantly change after opening. Unlike wine, which can deteriorate quickly after exposure to oxygen, bourbon actually maintains its quality and flavor for extended periods of time.
One of the reasons for this is the high alcohol content in bourbon. The alcohol acts as a preservative, preventing the growth of bacteria or spoilage. This means that even after opening a bottle of bourbon, it will remain stable and enjoyable to drink for a long time.
I remember a personal experience with a bottle of bourbon that I opened and enjoyed over the course of several months. The flavor profile remained consistent, and I did not notice any negative changes in the taste or aroma. This further reinforces the fact that bourbon can withstand the effects of oxidation without significant alteration.
It's also worth noting that bourbon is aged in charred oak barrels, which adds complexity and depth to its flavor. This aging process imparts certain characteristics to the spirit that are not easily affected by exposure to air. In fact, some bourbon enthusiasts argue that a bit of oxidation can actually enhance the flavors and mellow out any harsh edges.
That being said, it's important to store opened bottles of bourbon properly to ensure longevity. Keep the bottle sealed tightly and store it in a cool, dark place away from direct sunlight. This will help to minimize any potential degradation in flavor.
Bourbon is a spirit that can be enjoyed over an extended period of time after opening. Its high alcohol content and aging process in oak barrels contribute to its stability and ability to withstand oxidation. So, feel free to savor your favorite bottle of bourbon at your own pace, knowing that it will remain delicious and unchanged for a long time.