Not too sweet, nice slightly resinous flavor from the rosemary. A little lemon zest or even a bit of chile pepper would be a good addition. From"Herbivoracious", by Michael Natkin, who recommends this sauce for blintzes or vanilla ice cream. Also good on cornmeal pancakes. If you like a fruity sauce with duck, a little of this would be nice. Fresh rosemary is a must, dried leaves would be too intense.