Tag - water activity

What Is Water Activity (in Food)?

It is one of the most important parameters when determining the shelf life of foods. It’s what explains why your pie crust turns soggy over time. And it sounds more complicated than it is: water activity. For any...

The Science of Making Jam (Fruit Jelly)

If you have fruit trees in your garden you’re probably also swamped with fruit during certain times of the year. All of a sudden, you’ve got 5kg of figs and 20kg of apples. And not enough time to eat them...