These mussels make an elegant and alluring cold appetizer that will stretch to feed a crowd. The classic combination of fennel and tomatoes is enlivened with a floral vinegar, prepared in advance. Alyssum has a peppery, anise-like flavor and, like fennel, pairs well with tomatoes.
All in the family
Alyssum is related to the cabbage family Brassiceae, so you might also substitute kale flowers in this recipe. Brassicas have been shown to have a positive role in the prevention of cancer.