One of my favorite dishes of all time is Cá Kho Tộ, or braised and caramelized fish in claypot. A sweet and savory Vietnamese sauce called Nước Màu, or caramel, cooks with the fish, transforming it into a tender, decadent meal. In recent years, I’ve started to see this same sauce be used Stateside, often as an accompaniment to fried Brussels sprouts at upscale bars and restaurants.