Steamed chocolate sponge puddings with malt ice cream

300g of butter, softened, plus extra for greasing

70ml of milk

800ml of cream

500g of whipping cream

300g of icing sugar

4 eggs

2 egg yolks

400g of self-raising flour

180g of cacao powder

150g of dark chocolate

300g of sugar

50g of malt extract

2.5g of ice cream stabiliser, preferably Cremador

3 egg yolks

espresso, 1 shot