A sabayon is a delicious and delicate preparation based on egg yolks and sugar, with a liquid added (wine, alcohol, fruit juice, etc), which is then whipped in a bain-marie
until it is both light and smooth.
Usually sabayon is sweet (syllabub), but you can make it savoury, in which case there is only egg yolk, salt, and the chosen liquid, which could be stock, reduced wine, roasting juices, etc...
This recipe is for a sweet sabayon, using just two egg yolks. You will need to adapt quantities according to your needs, or your recipe.