When experimenting with different dressings, sometimes the preparation factor can be challenging, i.e. having all of the ingredients on hand. And if you, like myself, only want a dressing now and then, you're not going to keep a constant stock of these ingredients. Making a simple dressing with just tomatoes can be disappointing, but adding sun-dried tomatoes with the whole tomato makes the flavor much more powerful. Then just add whatever else you have lying around - garlic, lemon juice, nuts, avocado, carrot, or whatever. Maybe you guys have some other nice tips for great salad dressings?