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.

Experienced jelly-makers will tell you one enduring fact: All pectin is not created equal. The two types of pectin – liquid and dry – are safe for most people. Which one home cooks use, says Kansas ...

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 ...

A favorite sweet spread for toast and bagels, strawberry jam tastes even better when made from the beautiful berries found in our gardens and at local produce stands. Jam is a slightly thick spread ...

This story is a component of the feature “Seasons of Preserves: Berry Jelly,” which is part of a four-part series on preserving fruit at home called “L.A. in a Jar.” As RuPaul sings in the 2012 song ...

I love making recipes from my childhood, and this Freezer Jam Strawberry Without Pectin is proof of that. Made with just three ingredients and under 20 minutes, it transports me back in time with ...

An explainer on pectin — found in citrus peels and membranes — and why it's crucial to getting the proper set in marmalade. (Christina House/Los Angeles Times) This story is a component of the feature ...

This story is a component of the feature “Seasons of Preserves: Citrus Marmalade,” which is part of a four-part series on preserving fruit at home called “L.A. in a Jar.” If you know even the ...