Avoid adding mixers to your alcohol, since many of these contain corrosive or perishable ingredients that can damage your flask.
Beer, cider, wine coolers, and other carbonated beverages Wine and champagne Cream liqueurs, such as Baileys or Dooley’s Citrus liqueurs and other citrus-flavored beverages, such as hard lemonade
Many stainless steel flasks come with their own funnels for easier filling. Flask funnels can also be purchased at most liquor stores or department stores. If you don’t have a flask funnel, any kitchen funnel should do the trick. The main advantage of flask funnels is their small size, which makes them more portable.
When your flask is not with you, keep it in a cool area away from direct sunlight, such as inside a kitchen cupboard or pantry.
If you’re interested in storing alcohol in a flask for a longer period of time, consider using a glass flask instead of stainless steel. The main advantage to stainless steel flasks is that they are light, tough, and portable. Ideally, you should use your flask to store and transport alcohol that you are planning to finish off in a single day.
Stainless steel will heat up very quickly when you pour hot or boiling water into it. Wrap a dishtowel around the flask or use an oven mitt to keep yourself from getting burned. [3] X Research source Do not add soap to the water when you clean your flask. It is very difficult to rinse the soap out completely, and the remaining residue will ruin the flavor of your liquor. [4] X Research source
This type of cleaning is useful if you plan to switch to a new type of liquor. The lemon juice or vinegar will help eliminate any residual flavor from the liquor previously stored in the flask. Use only distilled white vinegar to clean your flask. Other types of vinegar may leave lingering flavors. Always rinse your flask thoroughly after washing it with lemon juice or vinegar. The acids from these cleansers can damage the flask and affect the taste of your liquor if they are not completely rinsed out. If you still smell lemon or vinegar, give it a second rinse.
Baking soda will dissolve quickly and create a fizzy (and potentially messy) reaction when mixed with lemon juice or vinegar. This reaction is not dangerous, but you may wish to stick to mixing baking soda with water if you want to avoid it.
