Ingredients
Equipment
Method
Instructions
- Prepare the strawberries: Wash, hull, and slice strawberries into roughly 1/2-inch pieces. Zest the lemon (if using) before juicing.
- Combine ingredients: In a large saucepan, combine strawberries, sugar, lemon juice, lemon zest (if using), butter (if using), and pectin (if using). Stir gently to combine.
- Bring to a boil: Bring the mixture to a rolling boil over medium-high heat, stirring frequently to prevent sticking.
- Reduce heat and simmer: Once boiling, reduce heat to medium-low and continue to stir occasionally. Cook for 10-15 minutes, or until it reaches setting point (see note below).
- Check setting point: A small amount of jam placed on a chilled plate should wrinkle slightly when pushed with a finger. A jam thermometer should read 220°F (104°C).
- Fill jars: Ladle hot jam into sterilized jars, leaving 1/4 inch headspace. Wipe rims clean, seal with lids and rings.
- Process jars (optional): For longer shelf life, process in a boiling water bath for 10 minutes. Cool completely. Refrigerate unprocessed jars.
Notes
For firmer jam, use pectin. Adjust sugar to your preference based on strawberry sweetness. Always use sterilized jars for safe preserving.
