Score lengthwise with a fork. Slice as thin as possible. Arrange slices in a colander. Sprinkle with 1 tablespoon salt and put a shallow bowl over them, weighted down to extract moisture. Remove the bowl after an hour.
Pat cucumbers dry with paper towels and put in the shallow bowl.
Mix remaining ingredients and pour over cucumbers. Cover and chill 2-3 hours. Drain slightly before serving. Butterfly pork loin lengthwise. Season with salt and pepper.