Homemade jam is usually so full of sugar, but it doesn't have to be! Using Pomona's Pectin, you can make low-sugar, honey-sweetened, or fruit juice-sweetened homemade jam. This particular pectin comes from citrus peel. The jelling is activated by calcium water (monocalcium phosphate), which comes with the pectin. It’s so easy to make jam from all of your freshly picked fruit of the season. Making and canning jam is one of the best ways to preserve the harvest! Last year, I experimented quite a bit with some of the hundreds of pounds of fruit we harvested.