Make vinaigrette by combining olive oil, vinegar, mayo, mustard, garlic, salt, pepper, dill and parsley. Whisk dressing until well combined, or place all ingredients in a mason jar, cover and shake vigorously.
1/4 cup olive oil, 2 tbsp. red wine vinegar, 2 tbsp. mayo, 1 tbsp. Dijon mustard, 1 clove garlic, 1/2 tsp. salt, 1/4 tsp. black pepper, 1 tbsp. fresh dill, 1 tbsp. fresh parsley