David Lebovitz's chocolate sherbet

When I saw David's photo of this sherbet, I knew I had to make it. In fact, it looked so good I went ahead and made a quadruple batch the first time. It was easy to put together (aside from my letting the chocolate/milk mixture boil over--all over, below the electric coil on the stove and in the tiny gap between the stove and the cupboard--because the baby started crying at a crucial moment;), and it tasted every bit as good as it looked. I had some trouble getting it to freeze properly--I had to put it in the freezer to get it to set up, and it had some unpleasant ice crystals when it did--but testing other recipes confirmed that this is a problem with my ice cream maker and not the recipe.

This is a fantastically intense dark chocolate sherbet. While I certainly didn't limit myself to the one scoop David suggests, this sherbet packs enough punch that I felt satisfied much sooner than with regular ice creams. My only complaint about this sherbet was that when I did choose to glut myself on it, after I ate the sherbet for fifteen or twenty minutes, a cocoa/fat scum started to accrue on the roof of my mouth. I suspect this is a problem most people don't have.

chocolate sherbet (David Lebovitz)
2 cups (1/2l) milk (whole, low, or non-fat)
1/2 cup (100g) sugar
pinch of salt
1/2 cup (50g) unsweetened cocoa powder
4 ounces (115g) bittersweet or semisweet chocolate, chopped
1/4 teaspoon vanilla extract
optional: 2 tablespoons coffee-flavored liqueur, such as Kahluà

For directions, see David's site.