How to Open a Stuck Jar: 6 Methods That Work

You have run it under the tap, banged it on the counter and passed it to the strongest person in the house. The lid still will not move. Here is how to open a stuck jar, and why it stuck.

Why is the jar lid stuck in the first place?

A stuck lid is rarely about strength. In our kitchen it is almost always one of three things. Each one has its own fix, so it helps to know which one you are up against.

• A vacuum seal. Jam, salsa and pickles are often packed hot. As the jar cools, the air inside shrinks and pulls the lid down hard. That is the pop you hear the first time a jar opens.
• Dried food in the threads. One drip of honey or sauce dries in the thread and glues the lid in place. This is the usual cause on jars you have opened before.
• Cold. A jar straight from the fridge has a cold, tight lid and stiff, slippery fingers on the outside of it.

So which one is yours? A new jar that has never been opened is a seal problem. A half-used jar of honey is a thread problem. A cold jar of pickles can be both.

The fix depends on which of those three is holding your lid. Most people reach for the wrong one first.

How to open a stuck jar: 6 methods that work

Try these in order. The first two deal with the seal and the threads. The last four give your hand a better grip or more leverage.

1. Break the vacuum seal

Slide the edge of a metal spoon under the rim of the lid. Twist it gently until you hear a small pop. That sound is air rushing back in, and the lid usually turns right after. Work your way around the lid if the first spot does not pop.

Use a spoon, not a sharp knife. A knife tip can slip, and glass chips easily at the rim.

2. Warm a metal lid with hot water

Hold the jar upside down under hot tap water for 30 to 60 seconds, so the water hits the lid and not the glass. Heat makes the metal lid expand a little and softens any sugar stuck in the threads. Taste of Home suggests dipping the lid in a bowl of hot water for about 30 seconds, or using a hair dryer. Dry the lid well before you turn it, or you will lose your grip.

3. Add grip

A wet or shiny lid slips under your fingers. Put on a rubber dish glove, wrap a dry dish towel over the lid, or stretch a thick rubber band around its edge. Each one turns a slippery lid into one your hand can hold.

4. Tap the edge of the lid

Give the edge of the lid a few firm taps with the back of a wooden spoon, all the way around. This can loosen dried food in the threads and nudge the seal. Tap the lid only, never the glass.

Method five is the one we reach for first now. It is not because the others fail. It is because it takes the least out of your hands.

5. Use a jar opener for leverage

A lever-style jar opener does two jobs at once. Its grip band holds the lid so your fingers do not have to. Its long handle turns the lid with your arm instead of your wrist.

Our 4-in-1 jar opener has four graduated openings: a large ring for wide jar lids, two wave-shaped middle openings and a narrow fork for small screw caps. Pick the smallest opening that slides over the lid, press the grip band against the rim, hold the jar and turn to the left.

6. Hold the lid still and turn the jar

This sounds like a trick, but it works. Brace the lid against your chest or wedge it in a drawer lined with a towel, then turn the jar body with both hands. Your larger muscles do the work.

Which method works best for which jar?

Not every trick suits every jar. Hot water does little for a plastic lid. Tapping does not help a jar with a perfect vacuum seal. Here is the quick match we use at home.

Jar or lid	Try first	Then try	Watch out for
New jar, metal lid (jam, salsa)	Break the seal with a spoon	Jar opener	Prying with a sharp knife
Opened jar, sticky threads (honey)	Hot water on the lid	Tap the lid edge	Wet hands on a hot lid
Cold jar from the fridge	Hot tap water, 30 to 60 seconds	Rubber glove	Boiling water on cold glass
Plastic lid	Rubber glove or band	Jar opener	Heat, which barely helps
Mason jar with a two-piece lid	Hot water on the band	Lift the flat lid with a spoon	Bending the flat lid
Small bottle cap	Rubber band	Small opening of a jar opener	Pliers, which crush the cap

Do you see a pattern? Seal problems need air. Thread problems need heat. Grip problems need rubber or leverage.

There is one mistake that turns a stuck lid into a broken jar. We have made it.

What should you never do to a stuck jar?

Most stuck jars end in a sandwich, not an injury. A few habits can change that.

• Do not pour boiling water on a cold jar. A sudden jump in temperature can crack the glass. Hot tap water is enough.
• Do not pry with a sharp knife. Use a spoon edge, and keep it pointed away from your face.
• Do not bang the glass on the counter. Tap the lid, not the jar.
• Do not twist harder and harder. If three good tries fail, change the method instead of the force.

That last one is the mistake we mean. Forcing a lid that is held by a seal only hurts your wrist. Letting air in takes two seconds.

How do you open a jar when your grip is weak?

If your hands ache after opening a jar, or you have stopped buying certain jars because of the lids, the answer is leverage. You want a tool that holds the lid for you and a handle long enough to turn it.

Set the jar on a counter or on a damp towel so it does not spin. Fit the opener over the lid, hold the jar with your free hand and turn the handle to the left. The 22.5 cm handle on our jar opener moves the effort from your fingers to your forearm.

A flat opener also lives anywhere. Ours sits in a drawer with the other small tools from our list of essential kitchen tools.

How do you stop jars from sticking next time?

A little care when you close a jar saves the fight when you open it.

• Wipe the rim and the threads before you put the lid back on.
• Close the lid until it is snug, not as tight as you can turn it.
• Let warm sauces cool a little before you seal the jar.
• Keep a jar opener where you open jars, not in the back of a cupboard.

Want more ideas like this? Our guide to multifunctional kitchen gadgets covers the small tools that earn their drawer space. For more ways to open a jar, see the round-ups from Food52, Food Network and Food & Wine.

One last question comes up every time we talk about this. It is the plastic lid.

Jar questions we get asked

How do you open a jar that won't open?

Break the seal first by sliding a spoon edge under the lid until it pops. Then warm a metal lid under hot tap water, add grip and turn counter-clockwise.

Does hot water really loosen a jar lid?

Yes, on metal lids. Heat makes the metal lid expand a little more than the glass, which eases its hold on the rim. It does much less for plastic lids.

How do you open a jar with a rubber band?

Stretch a thick rubber band around the edge of the lid, then grip the band and turn. The rubber stops your hand from slipping on a smooth lid.

How do you open a jar if you have arthritis?

Let leverage do the work. Rest the jar on a counter, fit a lever-style jar opener over the lid and turn the handle, so you never have to squeeze the lid itself.

How do you open a tight plastic jar lid?

Skip the hot water and focus on grip and seal. Tap the lid edge, use a rubber glove or a jar opener, and turn with steady pressure instead of short jerks.

A stuck jar is a small problem, but it shows up every week. Break the seal, warm the lid, add grip, and keep one good tool close. You can find ours with the other everyday tools in the Quiet Kitchen collection.

— Lisa, Strabella