The Shelf Life of Jam

THE PRESERVATION OF JAM DEPENDS ON ITS SUGAR CONTENT

A delightful pleasure for both young and old, jam is present in many French kitchens. While, in general, an unopened industrial jam can be preserved for about 2 years at room temperature and away from light, not all jams are made up of the same ingredients.

One ingredient plays a major role in the shelf life of jam: the amount of sugar. Jam with at least 55% sugar will last longer than a low-sugar or unsweetened jam (40% sugar or less). The reason is simple: for bacteria to proliferate, they need water and air.

When jam contains a lot of water and very little sugar, microorganisms develop rapidly, leading to mold growth, even if the jar of jam is unopened or stored away from light.

A low-sugar jam will, therefore, have a shorter shelf life due to its high water content.

The trick to preserving your jam for as long as possible is to keep it in the refrigerator, whether it is unopened or opened. The cold slows down the proliferation of bacteria and allows you to savor your jam for a longer period.

Clean Jam Lasts Longer

Another tip to improve the shelf life of your jam: avoid dipping a spoon or knife that has already been used, as bacteria multiply more quickly in your jam jar.

By keeping your jam clean, you extend its shelf life, as well as your enjoyment duration.

WHAT IS THE SHELF LIFE OF JAM?

Every jam, whether artisanal or industrial, has a specific shelf life.

Preserving Homemade Jam

Several tips are worth knowing to optimize the shelf life of homemade jam. You should:

Sterilize and label your jam jar;

Find the right sugar ratio.

Sterilize and Label Your Jam Jar for Preservation

The first step in preserving your homemade jam is to sterilize your jar in 3 steps:

Clean your jar or container, along with its lid;

Dip your jar in boiling water for about twenty minutes;

Let the jar dry upside down, then place your jam inside.

Labeling your jam jar allows you to remember the exact moment the preparation was made, so you know when to consume it.

Find the Right Sugar Ratio to Preserve Your Homemade Jam

As mentioned earlier, the sugar ratio influences the shelf life of your homemade jam. In addition to adding a delicious note and good texture to your jam, sugar is a natural preservative.

It is also possible to make a low-sugar jam, but just ensure to consume it quickly.

Artisanal or Industrial Jam: Which One to Choose?

Regarding artisanal jams such as Fauchon jams, it is suggested to consume them within 15 days of opening the jar.

Although industrial jams have a longer shelf life, it is always preferable to opt for homemade or artisanal jam. The jam will not only be more flavorful but also beneficial for your health, thanks to the use of seasonal fruits.

This is why Fauchon shares its unique expertise through its artisanal jams.