Refrigerator Jams, Quick 

The secret here is to do small batches. Put small bowl in freezer. In 10-to 12- inch skillet, bring fruit, sugar, and lemon juice to a boil over med-hi heat, stirring occasionally. Reduce heat to medium and cook, stirring constantly, and skimming foam as necessary, until mix begins to look syrupy and thickens slightly, about 5 min for strawberries and apricots and 8-9 min for plums, peaches and nectarines. Remove from heat. Spoon 1/2 tsp mix into frozen bowl, allow to set for 30 sec, and tip bowl 45 degrees to one side. If mix is liquid and runs to side of bowl, return mix to skillet and cook 1-2 min longer. Retest til it is a soft gel that moves slightly when tipped. It will keep in frig two or three weeks. Below are examples of sugar quantities for 1 lb fruit. Use 2 T lemon juice.

Berries, Strawberries 1c sugar
Apricots 1c sugar
Plum 1c + 2T sugar
Peach 1.25c sugar