Plum Jam - cooking recipe

Ingredients

5 lbs Italian plums (any small plum, including wild plums)
5 3/4 cups sugar
1 lemon, juice and grated peel

Preparation

Make a slit in sides of washed plums with a sharp knfe. Remove and discard pits, leaving plums whole.
Arrange plums in bottom of heavy non-aluminum saucepan. Add sugar, lemon juice and peel. Set aside in a cool area overnight.
Next morning bring plum mixture to a boil over medium-high heat. Remove from heat and stir. Set aside in cool area 1 day.
Nex morning bring plum mixture to a boil over medium-high heat, skimming frequently.
Remove fruit from saucepan using a slotted spoon. Reserve.
Boil liquid until syrup reaches the thread stage (or 230-degrees F on a candy thermometer).
Add fruit to syrup and return to a boil. Cool completely.
Pour into sterilized jars and seal.