Peel, core and cut quince into small 1cm pieces

Put quince, water and lemon juice into a large Pyrex bowl, cover tightly with 2 layers of cling film and poke holes into the top with a knife

Select 100% power and dial up 7 minutes. Press START button

Remove and stir; recover and return to microwave. Select 100% power and dial up 7 minutes. Press START button. Remove and cool slightly

Pour into a blender and blend until it forms a smooth puree

Weigh the puree and add 3/4 of the weight of sugar to the puree and stir until well combined

Return to the Pyrex bowl and select 100% power and dial up 30 minutes. Press START button; stir every 7 min, until thick and pink

Transfer to a lined square (18 x 18cm) baking dish or cake tin and spread out evenly. Cover and refrigerate until cool

Serve with cheese of your choice