Increase the heat and boil rapidly for 8-10 minutes before testing to see if set. To test whether the jam has set: take the saucer from the freezer and drop a small spoonful of jam on to it.

Gooseberry jam is a hidden gem among jams. Prepare gooseberries by rinsing well, removing the stem and the tail, and mashing with a potato masher. Add 3 cups fruit — either all gooseberries or a ...