I hate to say it, but I'd take the shortcut of buying Good Seasons Zesty Italian package mix, then make it with a decent quality olive oil and a wine vinegar. I've gotten more compliments on salads made with that, then when friends/relatives make it they wonder why theirs doesn't taste as good as mine. It was funny when I asked an aunt what she used for vinegar and oil, and of course she just used whatever vegetable oil she had on hand and probably distilled vinegar. I just laughed: Did I not tell you balsamic vinegar and extra virgin olive oil? I usually top the salad with a sprinkle of a good quality Italian-style grating cheese (parm, romano, or asiago).