Ingredients:
- 2 lbs fresh strawberries, hulled and quartered
- 1 lb rhubarb, trimmed and diced into 1/4 inch pieces
- 2 tbsp fresh lemon juice
- 2 cups granulated sugar
- 1 pouch low-methoxyl pectin
- 1 tbsp butter
- 1/4 tsp salt
Instructions:
- Combine the diced rhubarb and quartered strawberries in a large heavy-bottomed stainless steel pot.
- Stir in the lemon juice and salt. Let the mixture sit for 15 minutes to draw out natural juices.
- Stir in the pectin and butter. Bring the mixture to medium-high heat, stirring constantly.
- Gradually add the sugar one cup at a time, stirring vigorously after each addition until completely dissolved.
- Increase heat to high and bring the jam to a full, rolling boil that cannot be stirred down.
- Boil hard for exactly 1 minute.
- Perform the set test by scooping a small amount of jam onto a frozen plate; if it wrinkles when pushed with a finger after 30 seconds, it is ready.
- Ladle the jam into sterilized half-pint canning jars and process in a water bath canner.