For shelf-stable jam, the USDA recommends jars with the two-part lids (a metal ring and flat lid with rubber gasket). The lid covers the jar, and the ring holds the lid in place as it seals during ...

These simple bars with a nubby, crumbly topping hold up well for travel, easily feed a crowd and are maximally adaptable. Substitute any thick jam for strawberry — ideally something tart to ...

Jam is one of our favorite spreads, and it's oh so versatile — from simple seasonal fruit and sugar to sweet-and-meaty bacon jam. Not only is it heavenly on warm toast in the morning, but it ...

Optimum pH for persuading jam and jelly to gel is somewhere between 2.8 and 3.3. All the wonderful jams of summer are basically creative exercises in chemistry.