How to Care for Your Jacob Bromwell® Flask

Caring for Your Flask Flask Jacob Bromwell Flasks

How to Care for Your Jacob Bromwell® Flask

Whether you're new to the Jacob Bromwell® family of collectors or a Jacob Bromwell® aficionado, welcome! We created this guide to help our family of flask owners know how to care for their flask to ensure the best results for use and increase the longevity of the flask. If you have any specific questions that aren't addressed here, please reach out to us at


Cleaning Your Copper Flask

Before using your Jacob Bromwell® flask for the first time and also for regular cleaning we recommend following these steps:

Step 1: Grab your flask, heat resistant gloves (oven mitts work perfectly), and some water. Fill your flask up with water, but be sure to leave about an inch of space at the top so the water can expand as it heats up.

Step 2: Turn your range or stovetop on high and place your flask filled with water on the hot eye. Allow to heat for 5-8 minutes or until it starts to boil, you will hear the flask and water heating up.

Step 3: Once the water is boiling, use your heat resistant gloves to carefully grab your flask and empty the water into the sink. Set the hot flask on a heat resistant pad or back on the stove on a non-active stove eye.

Step 4: After your flask cools, place it upside down on a paper towel or napkin for about an hour to allow any remaining water to drip out. Shake the flask upside on occasion to help shift any remaining water out.

CLEANING INSTRUCTIONS FOR SPECIAL EDITION FLASKS: For any Jacob Bromwell® Flask that features patina and a lacquer coating, please do not follow the cleaning instructions above. Instead, boil a kettle or pot of water. Once water reaches boiling temperatures, pour carefully into your flask - allow to sit for several minutes to sanitize. Repeat if necessary. Please use caution and heat protection gear when handling boiling water and the hot flask.

CLEANING INSTRUCTIONS FOR PEWTER FLASKS: For any Jacob Bromwell® Pewter Flask, please do not follow the cleaning instructions above. Instead, use hot top water and dish soap on the inside of the flask. You can also use our Flask Cleaning Brush Set to help with the process. Repeat if necessary. Please use caution and heat protection gear when handling hot water and the hot flask.


Polishing Your Flask

This is one of the most sensitive topics among Jacob Bromwell® flask owners! Some Jacob Bromwell® owners would have a conniption if we suggested they polish their flask while others love the clean shine of a newly polished flask. Polishing is 100% personal preference. Copper will never rust, but your Jacob Bromwell® flask will immediately start to oxide and develop a beautiful and unique patina as soon as you start using it. No matter how much your flask ages, our Sterling Copper Polish will strip away the tarnish. Due to a special proprietary blend we patented, we only recommend using our copper polish on your Jacob Bromwell® flask. Here's how to polish your flask:

Step 1: Grab your flask, a bottle of our Sterling Copper Polish, some paper towels and a clean cloth you don't mind ruining (an old cotton t-shirt works great).

Step 2: Open the bottle of copper polish and drop a nickel sized amount onto your flask.

Step 3: Take a paper towel or a separate old cloth and work the polish all around the flask until it coats the entire flask. Don't forget the screw top and spout! Allow the polish to sit for 1-2 minutes, but don't let it dry.

Step 4: Grab your clean cloth and begin wiping off the polish using a circular motion, apply slight pressure while polishing. Be sure to continuously change sides of the cloth as you will notice tarnish collecting on the cloth. Continue to do this until all polish has been removed.

Once polished, your flask will look nearly brand new again! For tougher patinas you may have to repeat Steps 2-4 more than once.


Replacing Your Cork

Depending on how frequently you use your flask, you'll need to replace the cork in your screw top on occasion. Cork replacement can be purchased here. When you get your new cork, remove the old cork and add the new cork to your screw top to see if that fixes the leak. The replacement cork is much thicker. Before inserting your new cork, allow it to soak in water for a few hours to make it more pliable. Once it's added, allow your screw-top to air dry.


Storing Spirits

Every Jacob Bromwell® flask features a hot-tin interior making the flask food/beverage safe. For best taste and freshness, we recommend storing spirits in your flask for no more than 1-2 days at a time.

Now go out and enjoy your flask! Tag us in any cool pics on social @JacobBromwell and always remember: It's not just a flask, it's a Jacob Bromwell®

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