“A refreshing warm-weather dressing which is best when made in a food processor. Serve it over chilled romaine and cherry tomatoes.” –Longwood Inn, Marlboro, Vermont
Peel cucumbers, slice in half lengthwise, and scoop out seeds with a spoon. In processor puree mint leaves, garlic, cucumber, and lemon juice till very fine. In large bowl mix this together with mayonnaise, sour cream, and vinegar. Add a few twists of black pepper.