• 1 cup green herb mayonnaise (see variation)
• ¼ cup finely chopped fresh chives
• 1 clove garlic, peeled, very finely minced
• 4 salted anchovy fillets, minced
• ½ cup sour cream

Mix all the ingredients in a bowl. Check for sufficient salt and pepper, adding a little less than you think it needs. Then let the sauce sit for an hour to allow the flavors to combine and check the seasoning again.