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.

This video shows the full process of making jam from 35 kilograms of organic plums. The focus is on simple ingredients, steady cooking, and consistent results. Large-batch preparation turns fresh ...

Making homemade jam can seem incredibly complicated and intimidating. Do you have to can it? What if you don’t have the equipment? And what if it doesn’t set?!! However, as someone who was stirring ...

With the holidays near, there is one type of gift I’m always happy to receive — a delicious jar of homemade jam. And here’s the truth: You don’t need to be Martha Stewart or Ina Garten to make ...