makes 6 small jars
4 egg yolks Scant 1 cup (200 g) plus 3 tbsp packed light brown sugar 1¼ cups (300 ml) Guinness (stout) 1¼ cups plus 7 tbsp (400 ml) heavy cream 3½ oz (100 g) good-quality dark chocolate (about 72% cacao), chopped
