Grilled Salmon without horseradish

1 tablespoon wasabi paste (see Notes) 2 teaspoons soy sauce 2 teaspoons rice vinegar 1/2 cup mayonnaise 1/2 pound salmon or arctic char fillet 2 teaspoons[...]

1/2 vanilla bean , cut lengthwise 1 lemon, juice of 2 ruby red grapefruits , segmented, juice reserved 1/2 teaspoon honey 1/2 cup extra virgin olive oil ,[...]