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 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 ...

Note: Pomona's Universal Pectin is a delightful all natural product derived from lemon and orange peel (a great source of naturally occurring pectin). It aids in the gelling of the strawberries and ...

Make sure to clean and dry the jars (enough for about 5 cups jam). Place the strawberries into a food processor. Pulse a couple times to crush but not totally puree the berries. Measure exactly 2 c.

From berries and peaches to rhubarb, this versatile jam recipe transforms fresh fruit into deliciously sweet preserves. Once macerated, the fruit mixture is cooked into a glossy, jewel-toned jam. “The ...

A cup of fancy strawberry jam can easily cost about $9 or more. But you can make three times as much for that price and use three simple tricks to create an intensely strawberry spread. Trick No. 1: ...

After a long winter, strawberries are one of the first fruits that pop up at farmers markets, signaling the beginning of spring and the impending summer produce season. Turning the juicy red berries ...