Peach Plum Jam - cooking recipe

Ingredients

2 1/2 cups finely chopped peeled and pitted peaches
1 1/2 cups finely chopped pitted plums
4 tablespoons lemon juice
7 1/2 cups sugar
2 (3 ounce) envelopes certo liquid pectin

Preparation

In a large pot combine peaches, plums, lemon juice and sugar.
Cook, stiring, over med-high heat until sugar is melted.
Bring to a rolling boil.
Boil, stirring constantly, for 1 minute.
Add 2 pouches of Certo, stirring constantly.
Return to a rolling boil.
Boil, stirring constantly for 1 minute.
Remove from heat.
Skim off any foam with a metal spoon.
Fill Hot sterile jars leaving 1/4 inch headspace.
Wipe off jar rims with damp cloth.
Top with 2 piece seal and ring.
Hot water bath jars for 10 minutes.