As an expert sommelier and brewer, I can confidently say that storing homemade vanilla extract in plastic bottles is not recommended. The reason for this is that the alcohol in the extract can degrade the plastic over time, leading to the leaching of chemicals into your extract. This can compromise the quality and safety of your vanilla extract.
When it comes to storing any type of alcohol-based product, such as vanilla extract, it is best to use airtight glass bottles with resealable lids. Glass is a non-reactive material that will not be affected by the alcohol, ensuring that no unwanted chemicals are introduced into your extract.
I highly recommend investing in a high-quality glass bottle specifically designed for storing extracts. These bottles are typically made from dark glass, such as amber or cobalt blue, which helps to protect the extract from light exposure. Light can degrade the flavor and quality of the extract, so it's important to store it in a dark container.
Airtight glass bottles with resealable lids can be easily found online, and they come in various sizes to suit your needs. Make sure to choose a bottle that has a tight seal to prevent any air from entering and oxidizing your extract.
In terms of personal experiences, I have encountered situations where homemade vanilla extract was stored in plastic bottles. Over time, the extract developed an off-flavor and aroma, likely due to the interaction between the alcohol and the plastic. This experience reinforced the importance of using glass bottles for storing alcoholic products.
To summarize, it is best to avoid storing homemade vanilla extract in plastic bottles. Instead, opt for airtight glass bottles with resealable lids to ensure the quality and safety of your extract. Remember to choose dark glass bottles to protect the extract from light exposure, and always store it in a cool, dark place to maintain its flavor and potency.