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.

A cross between a scone, cake and cinnamon bun, this giant jam bun is a swirly, almond-scented delight. By Melissa Clark Melissa Clark’s obsession with British cream teas and 19th-century novels ...

(CNN) — 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 ...