How To Clean A Hip Flask

Your Ultimate Guide for Countryside Enthusiasts

Whether you carry your flask to beat the cold on a frosty shoot or just like a nip while fixing fences, one thing's for sure—no one wants a swig that tastes like old pennies. Here’s how to clean your hip flask properly, keep it fresh, and make it last season after season.

Why Cleaning Your Hip Flask Matters

Left uncleaned, a hip flask can quickly develop off-smells, metallic tangs, or even rust (especially the lid and hinge). A quick rinse isn’t enough—residue builds up fast, especially with whisky or sugary liqueurs.

What You’ll Need

• Warm (not boiling) water
  
  
• Mild washing-up liquid (optional)
  
  
• Baking soda (for deep cleans)
  
  
• White vinegar or lemon juice (for odours)
  
  
• Funnel (optional, for easy rinsing)
  
  
• Bottle brush (for stubborn spots)
  
  
• Drying rack or clean tea towel
  
  

Step-by-Step: How to Clean a Hip Flask Properly

1. Empty and Rinse Immediately

Rinse with warm water as soon as you're back indoors. Never let alcohol sit for days—especially cream liqueurs.

2. Add a Natural Cleaner

For a deeper clean:

• Add 1 tsp baking soda
  
  
• Add a splash of white vinegar or lemon juice
  
  
• Let it fizz for a few minutes
  
  

This helps break down odours and residues.

3. Shake and Sit

Seal the lid and give it a good shake. Let the solution sit for 10–15 minutes.

4. Scrub (If Needed)

Use a narrow bottle brush if the inside is stained or has residue. Be gentle—especially with older or pewter flasks.

5. Rinse Thoroughly

Rinse with warm water several times until there's no scent of vinegar or soap.

6. Dry Fully

Leave upside down on a clean towel or drying rack. Never store damp—it can trap moisture and cause rust or smells.

Check out our infographic below of tips on cleaning stainless steel, leather-wrapped and pewter hip flasks.

Got a leather-wrapped flask? You may also want to explore our leather balm to keep the exterior in top shape.

What Not to Do

• No dishwasher – The heat and detergent can warp or damage the seal
  
  
• No bleach or harsh chemicals – Especially with stainless steel or pewter
  
  
• Don’t store liquids long-term – Alcohol can break down seals and taint the taste
  
  

How Often Should You Clean a Hip Flask?

• After every use – even if it’s just water
  
  
• Before storing away – especially after winter or a shoot
  
  
• If it smells – do a vinegar and baking soda deep clean
  
  

Troubleshooting Common Hip Flask Problems

That odd metallic tang? A bit of a leak? Don't worry, most flask troubles are easy to fix with the right know-how.

Metallic Taste That Won’t Budge - If your dram suddenly tastes more tin than tipple, it's likely down to residue or early signs of corrosion. Give the flask a proper deep clean using baking soda or white vinegar, and be sure to rinse it well—several times over. Still tasting odd after that? If it's an older or budget flask, it may be time to retire it.

Smells That Linger - Left a drop of liqueur in there a bit too long? Vinegar or baking soda usually sorts out musty odours. For more stubborn smells, drop in a denture-cleaning tablet, let it fizz for a few minutes, and rinse thoroughly. It’s a trick many shooters swear by after a long season.

Leaky Cap - If the cap’s leaking, check the rubber seal inside—if it's perished, it may need replacing. Often, just a firm (but not forceful) tighten does the job. Always double-check it before you pop it back in your shooting jacket.

Looking for a new flask or gift?

Once your flask is sparkling clean, why not treat yourself, or someone else, to something special? Explore our collection of hip flasks, quirky shooting gifts and country gifts that pair perfectly with days in the field.

Final Thoughts

Your hip flask is more than just a vessel—it’s part of your outdoor kit. Whether you take it beating, hiking, or just keep it in your coat pocket, a clean flask means every sip tastes just as it should. Many flask owners keep one in their kit bag.

Got a stainless steel hip flask that needs a refresh? Or looking for a new one with a smart leather wrap? Explore our full range of hip flasks for men—built for the great outdoors.