My aunt taught me to make this frosting when I was a teenager. I suppose you can use other flavors of syrup, strawberry, etc., which they didn't have then.

Aunt Rose’s Chocolate Hungarian Frosting

1 stick unsalted butter, room temperature
2 cups powdered sugar
1 tsp vanilla
Hershey’s syrup and 2 tbsp cocoa powder, if desired

Put butter and powdered sugar in Kitchen Aid or other mixer. Whip until blended. Add vanilla extract and blend. With mixer running, slowly add Hershey’s syrup until enough syrup is added to taste. Can add some cocoa powder to the powdered sugar for a stronger chocolate flavor. Whip until the consistency of whipped cream. Frost 8 or 9 inch square cake. Serve immediately (by next day frosting will flop). It will still be delicious, but it won't look like chocolate whipped cream anymore.
Angie/Bflo