These are the ingredients that we need. This time I took a white grapefruit. Celery wash and peel, tarragon mine.

Grapefruit cut in half and remove the flesh with a spoon, juice also whole collected. Pulp and juice of grapefruit with tarragon and celery puree them in a blender until smooth, adding water or ice, stir and pour in glasses. (If the red grapefruit, the colour of the finished cocktail will be very different).