[yields] Broccoli rabe has a bitter flavor. Bitter is such an important, yet under rated flavor in our culture. Bitter is quite good for not only cleansing the liver, it is also wonderful for cooling the body during the hot time of year. Advertisement Elana Amsterdam Elana is an eco-entrepreneur and gluten-free guru. She shares weekly recipes, ingredient selection, food purchasing, and preparation tips on her website, Elana's Pantry.