Place the strawberries in a blender or food processor, and blend until pureed. You can also mash them by hand with a potato masher.
Combine the mashed strawberries, lemon juice, and honey in a saucepan, and bring to a steady, low simmer.
Simmer for about 30 minutes, or until the volume decreases by about a 1/4.
Cool to room temperature, and place in tightly closed glass jars, or other containers, leaving some space at the top for freezing expansion. It will last in the fridge for a few weeks, or in the freezer for a few months.