This is the last installment of “L.A. in a Jar,” cooking columnist Ben Mims’ four-part series on preserving fruit at home. The first fruit preserve I ever ate was muscadine jelly. A woman in my small ...

Put fruit in a colander and rinse well. (If using strawberries, take off the stems.) Put fruit in a bowl, or an 8-cup measuring cup. Crush the fruit with a potato masher or pastry blender. In a bowl, ...