Place the yolks and sugar in a pot that you’ll later use to water-bath. Beat until well blended and a little foamy. While still whisking, gradually add the wine.
At some point, the liquid will get a fluffy and creamy consistency, and the alcohol smell will be gone. That’s when your zabaione is ready.
You can serve it immediately, hot and scented, or you can let it cool down, refrigerate and serve cold: sweet and delicate.
Preheat the oven to 350°F (180°C).
Beat together butter, brown sugar, and egg.
Add the molasses and vanilla.
Add flour, spices, and salt.
Knead well.
Roll out the dough and cut out the cookies.
Bake 9-10 minutes (this is the baking time for very tall cookies, for small flat cookies, 5 minutes will be enough) or until light brown around the edges.
Dip the cookies in the zabaglione!