Bring a half filled saucepan of water to the boil. Reduce the heat so that the water is barely simmering. Place the egg yolks and sugar in a bowl and whisk with an electric whisk until place and creamy. Set the bowl over the saucepan of water. Don't let the base touch the surface of the water, or you'll end up with scrambled eggs. Gradually add the wine, whisking constantly. Continue whisking until the mixture is thick and has increased in volume. Pour into heatproof gasses or bowls and serve immediately with the biscuits.
I want to encourage youngsters (male or female) to get into the kitchen and enjoy cooking. TASTE it!