One of the best things about a Thermomix is it's ability to whip up a cake in only a few seconds. I would never before have believed that I could be cooking dinner whilst rustling up an easy sponge cake for dessert.
I used an old school method to weigh out the ingredients and it really is a foolproof way of making a sponge cake. Simply weigh three eggs in their shells - in my case they came to 160g. The same weight of flour, butter/margarine and caster sugar.