For the dressing - Combine above ingredients except sugar in a shaker jar and shake to combine or place in a bowl and whisk until smooth and mayo is completely blended. Taste dressing and if too tangy then add sugar and blend in.
For the candied walnuts - Place sugar in a thick bottomed sauce pan. Cook over medioum heat stirring until sugar turns to a liquid. Keep cooking until it turns a light amber color. Quickly mix in the walnuts and stir to coat.
Spread walnuts on a baking sheet lined with a silpat or parchment paper. Use 2 forks and separate the walnuts. Sprinkle with salt and let cook completely.