I have made this and it taste exactly like Olive Garden salad dressing ! It is so good and so easy to make.
salad dressing : I pkg Italian dressing mix( mix this up as you would following instructions on back of pkg. and then adding all other ingredients.), 1/2 tsp each of dried Italian seasoning & salt. 1/4 tsp pepper, 1/2 tsp. sugar, 1/4 tsp garlic powder 1/2 tbsp. mayo ( it says no Miracle whip) 1/4 c olive oil, 2tbls, white vinegar, 1 1/2 tbls water.
Heres the website you can find complete details how to make this salad dressing:http://www.thecountrycook.net/2012/01/olive-garden-salad-dressing.html