I am from a country on the Mediterranean coast where people eat salad at least once a day during the summer. I do not understand the concept of "salad dressing". Olive oil, vinegar or a few drops of lemon is all a salad needs. Maybe a drop of honey in the oil if the young spinach is still too biter (and you are less than 12)...  People who put mayonnaise or guacamole with Doritos (wtf!?!) on top of the salad blow my mind. It's a salad! Not mayonnaise soup with green stuff floating; or a caloric monstrosity.  Salad is meant to be refreshing and light.