Curious about what exactly is jam and how it differs from jelly, conserves, and marmalade? Master preserver Allison Carroll Duffy explains it all for you.

Several open jars of jam on a wood table surrounded by different types of fruit. : beats

What is jam made of?

For all its varied and sometimes complex flavors, jam is actually a very simple food, containing only four primary components: fruit (or occasionally flowers, herbs, or vegetables), acid, pectin, and sweetener.

Preserving with Ponoma's PectinWant it? Click it

There are actually…

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