Delia Smith

First, pick over the fruit and place it in a large saucepan or flameproof casserole. Sprinkle it with the caster sugar and then put the pan over a gentle heat for 3-5 minutes, only until the sugar melts and the juices begin to run. Do not over-stir or the fruit will break down to a mush. Now place the fruit in the serving dish and allow it to get quite cold. After that whip the cream till thick and then fold it in to the yoghurt and spread this mixture all over the fruit, taking it right up to the edges of the dish to seal the fruit underneath. Cover with clingfilm and chill in the refrigerator for at least 2 hours. About 2 hours before you want to serve it, spread the surface thickly and evenly with the demerara sugar then spray the surface very lightly with water (this helps melt the sugar, speeding up the caramelising process). Use a blow torch to caramelise the sugar on top. To do this hold the ignited blow torch over the sugar aiming the tip of the flame at the sugar - the sugar will immediately begin to bubble and melt. You will soon see the sugar turn to a golden-brown caramel. As soon as the sugar has reached a dark golden-brown colour, move the blow torch and continue to caramelise the sugar all over the top. It will take about 10 minutes to caramelise all the sugar. Now leave to cool and pop it back in the refrigerator where the sugar will form a crusty surface - wonderful! Watch how to make more brulee recipes in our Cookery School Video on this page.