Whisk the vinegar slowly into the oil, and then the grapefruit juice, until an emulsion is reached.

Add the shallot, salt and pepper and mix well.

Put the salad ingredients together in the bowl and mix gently. Taste and re-season accordingly.

Garnish with a mint sprig.

Serves 6

* If cayenne pepper is too spicy for your taste, you can substitute sweet paprika.