01 - Fill a medium saucepan with about 2 inches of water and bring to a gentle simmer.
02 - In a large, heatproof bowl, whisk together egg yolks and sugar until pale and slightly thickened, approximately 2 minutes.
03 - Place the bowl over the simmering water, ensuring the bottom does not touch the water.
04 - Gradually add Marsala wine while whisking constantly to prevent curdling.
05 - Continue whisking for 8-10 minutes, until the mixture triples in volume and forms thick, soft ribbons when the whisk is lifted.
06 - Remove from heat and serve immediately in chilled dessert glasses or bowls.
07 - Garnish with fresh berries or serve alongside ladyfingers or biscotti for dipping.