If using fresh cherries, then remove the stones.
250 g cherries, 100 g raspberries, 100 g strawberries, 1 tbsp lemon juice, 2 tbsp water
Put the cherries, raspberries and strawberries into a large heavy-based pan with the lemon juice and water.
Simmer the fruit for 10 minutes until soft.
450 g granulated white sugar
Add the sugar and cook gently until all the sugar has dissolved.
Bring to a rolling boil and boil for 5 minutes. Then remove the pan from the heat.
Place a teaspoon of jam on a cold saucer and put it in the fridge for 5 minutes. Push your finger into the jam and if it wrinkles then the jam is ready.
If the jam does not wrinkle bring the pan back to a rolling boil and cook for another 5 minutes then repeat the wrinkle test on a clean saucer.
Use a ladle or jug to pour the jam into clean sterilised jam jars and seal. Store in a cool larder.
Serve with croissants, bread and scones.