In a medium mixing bowl, combine sliced strawberries and sugar. Cover and set aside.
In a heat-safe bowl, combine egg yolks, sugar, and marsala wine.
Fill a shallow pot halfway with water and bring the water to a simmer. Reduce the heat and set the heat-safe bowl with yolk mixture, cover the pot so that its sides are resting on the top half of the pot. (You can also use a double boiler pot if you have one.)
Whisk until the mixture triples in volume and froths up.
Divide the mixture between serving glasses and top with strawberry mixture.
Serve and enjoy.
You can substitute Marsala wine with other types of sweet wine.