Preheat your oven to 150 C (300 F)
Start whisking the egg whites in a large bowl – you can use a hand whisk, but an electric mixer will make the process faster. You want them to look light and frothy.
Continue to whisk, gradually adding in the sugar until it’s all incorporated.
Follow with the corn starch, adding half at a time, then a couple of drops of food colouring if you wish.
Whisk until the mixture forms stiff, glossy peaks (don’t over whip!), then tip the mixture onto a tray lined with baking paper and use a knife to mould it into a rounded loaf shape.
Bake in the preheated oven for 25 minutes, until the outside has turned a light brown.
Leave to cool before eating – and posting a video online.