This smoothie is so wonderful. It has a slightly bitter taste but so yummy at the same time. 1 to 1/2 cups coconut water or pure water 1/2 to 1 large grapefruit 1 tbsp avocado 1 to 2 handfuls romaine leaves (approximately 2 to 4 dark leaves) 1 medium celery stalk small handful cilantro 1…