Add Yahoo as a preferred source to see more of our stories on Google. We use strawberry jam as an example to explore the underlying principles of water activity, a key technique for food preservation.

Homemade fruit jam is a delicious, easy way to preserve the flavors of fresh fruits like strawberries, blueberries, or peaches. This recipe combines your favorite fruits with a touch of lemon juice ...

In the past, making jam was a way to have fruit on hand during the long winter months. Today, we make jam more for pleasure than out of necessity. A range of new pectin now allows us to make jam ...

This story first appeared on Food52, an online community that gives you everything you need for a happier kitchen and home – that means tested recipes, a shop full of beautiful products, a cooking ...

Our black raspberries are ripening so quick this year. I have to be vigilant, though, about picking enough for jams. The competition is fierce. The birds enjoy berries and the deer, well, they’re ...