Before you start, apply a thin layer of soft butter (using a pastry brush) onto the inside of 4 ramekins, and place in the fridge. Just before you fill them with the soufflé mix brush them again with butter and a thin layer of sugar.
Souffle base: 300g Banana puree, 20g Corn Flour, 20g sugar, Juice of 1/2 lemon.
Place all the ingredients in a food processor and blitz until smooth. Heat this mix in a saucepan on a low flame, whilst continually stirring, for about 5 minutes, or until it starts to thicken, and cool in the fridge.
Meringue: 125g egg whites, 30g Sugar
Whisk the whites, when they start to thicken and increase in volume start adding the sugar, a little at a time, until the soft peak stage.
Soufflé: Preheat oven to 170 deg cel. Place the soufflé base in a large bowl and whisk it to break it down. Add 1/3 of the meringue to this base, and gently mix together until they are fully combined. Then add another 1/3 of meringue and gently fold together, and repeat this process with the second and last third. Spoon the mix into the moulds and scape off excess with a palette knife. Cook in the oven for 10-12 minutes, and serve immediately.