It don't sound good to me
Oh, they are wonderful!
They tend to be higher alcohol content. The one at the local brewery is 8%! You typically do not slam one; they are nice sipping beers. They tend to be complex, with a rich texture and hints of yummy flavors; chocolate, espresso, caramel, vanilla...
The ones I have brewed have been in the 7% alcohol range.
Here are some quotes:
"a dark brown color with a light creamy head formation and an assertive vanilla nose. There is a fair amount of roastiness however combined with sweet nutty malt notes, a bit of chewy caramel, and of course some strong notes of vanilla. More of that roasty bitterness can be discerned in the nicely balanced finish"
"Beautiful as it settles in the glass, with the last of the sawdust beads leaving the body black and strengthening the krausen-esque, one-inch, thick tan foam cap. Simply lovely to look at. Dry black patent, espresso grinds and semi-sweet chocolate greet the nose. A Madagascar vanilla bean sweetened smoothness lies underneath the darker contributors, along with an accent of toasted coconut shavings. Full flavored milk chocolate gets a healthy dose of vanilla and hazelnut cream, eventually taking on a café cooler character, conjured up with the help of its friend Frangelico. Lactic milkiness contributes delicatessen chocolates, slowly dispersing throughout the palate. Swiss chocolates and coconut sweetened macadamia nuts fork from the vanilla bean project. Oats get slightly blackened and then melded into white chocolate milk. Gentle matching bitterness lets the roasted barley do most of the harsher coffee bittering flavor connotations, but all-in-all, it’s a smooth and balanced performance. Vanilla beans get plucked out of Frangelico crème in the end, and then rolled into an Oreo piecrust made especially with choice mocha java grinds. A slight lactic chocolate sourness grabs at the corners, but it’s a well-appreciated curvature to the tongue."