Watermelon jam

This is a soft jam with a divine colour. It's delicious on scones and pikelets or drizzled over blue cheese and sliced pears.

Ingredients

2 kgs	Watermelon, peeled and seeded (Main)
1	Granny Smith apple, peeled, cored and grated
¼ cup	Lemon juice
1 kg	Jam-setting sugar
1 tsp	Butter

Directions

1. Place the watermelon in batches in a food processor. Pulse until coarsely puréed. You should have about 4 cups of purée.
2. Combine the purée, apple and lemon juice in a large, stainless steel saucepan. Stir in the sugar over low heat, until dissolved. Add the butter and bring to a rolling boil. Cook for 4 minutes.
3. Remove from the heat. Skim off any foam. Test for setting. If it doesn't start setting when a little is placed on a cold saucer, then quickly return it to the boil for 30 seconds. Pour into hot sterilised jars and seal.