Making jam, jelly, or preserves is a creative process that balances simple ingredients with a touch of science. Each element serves a unique purpose, dictating texture, flavor, and even storability.

Preserves most closely resemble some of the oldest versions of jams and other preserved fruits. This is because they contain more fruit than either jam or jelly, and little to no added pectin.

Our experts also rated the nutrition of each jelly and jam—based on calories ... or preservatives. Jams and preserves (the two terms can be used interchangeably, according to federal rules ...