Take a look at the label of that bottled salad dressing in your fridge. Unless the dressing is one of the few organic varieties available at supermarkets, like Annie's Naturals, the label probably lists ingredients like high fructose corn syrup (problematic in its own right), calcium disodium EDTA, sulfiting agents, and artifical colors (xanthan gum is also a common additive, even in organic products; it comes from a bacterial fermentation process, is used in very tiny quantities, and is not known to cause problems--in fact, it's used as a gluten replacement in baked goods by people with an allergy to gluten). Commercial salad dressings are also high in salt. And don't make me look at the garish color of those prepared "Italian" dressings cheap restaurants often serve ... ugh.
I should state up front that calcium disodium EDTA and sulfiting agents are probably perfectly safe for most human consumption (some people do have allergic reactions to sulfites that can be life-threatening). That does not mean, however, that I necessarily want them in my food. They are added as a stabilizer and a preservative, respectively. As with so many additives, shelf life is the reason they're there. But if you make your own salad dressing, the issue of shelf life is, of course, irrelevant.
Whipping up your own salad dressing takes hardly any time, and a generous quantity can be prepared that will last through several meals, making it just as convenient as the bottled variety. Our day-in, day-out salad dressing is vinaigrette, which is endlessly variable according to the kind of vinegar, oil, herbs, and other ingredients (lemon juice, mustard, Worcestershire sauce, sesame seeds, etc.) used. I'll give you a basic recipe, and then discuss ingredients.
Don't be put off by my long-windedness in discussing ingredients. I'm just trying to pass along some of the things I learned over the years. The basic recipe below is simple, quick, and classic. You can make it in a couple of minutes. With a couple of minutes more, you can add ingredients to the recipe for variety's sake.
Basic vinaigrette recipe:
one part vinegar
two to three parts oil
smashed garlic clove (optional)
salt to taste
freshly ground pepper to taste
sugar or honey, if desired.
Let's say you want a fair quantity of dressing. Use a half cup of vinegar and a cup of oil to start, tasting to see whether you'd prefer a bit more oil (remember, though, that you want to be able to use up all the dressing before the oil turns rancid!). Some classic French recipes call for a four to one ratio of oil to vinegar, but that's too much oil for my taste; I rarely go as far as three to one.
If you like sweetener in your vinaigrette or feel that it's necessary to balance the acidity, add a small amount and taste-test. If my salad dressing seems too acidic, I add more oil or sometimes even water, as I really dislike any sweetness in my vinaigrette.
Place the ingredients in a bowl, add salt and any other ingredients, and whisk until it's emulsified. An immersible blender also works very well. Smash a garlic clove, if using, with the side of a broad knife, remove the peel, and add to the dressing. I like to let the smashed clove sit in the dressing to
infuse the dressing with its flavor. If you don't like a strong garlic
flavor, remove the clove after a couple of days. I store the dressing in a tightly-capped jar or corked bottles; the emulsion will separate, so you want a container you can shake up to re-emulsify the dressing.
The oil
Olive oil is my choice for salad dressing, but the heavy, fruity, dark green variety is a bit too strong on salads for my taste. In the past I've used extra light olive oil, even though it's not cold-pressed or expeller-pressed. I've become somewhat fanatical about olive oil lately, though, and don't really want to ingest heat-treated or chemically treated oil. Oils processed in this way rob the oil of its healthful benefits. So I now buy only extra-virgin olive oil. Colavita offers an extra-virgin olive oil, carried by our Meijer, that's "first cold pressed"; the first pressing yields a more delicate oil that works well for salads. It's not cheap, though, so you may want to blend in a second, less expensive oil. Wherever possible, opt for cold- or expeller-pressed oils. Your body will thank you.
You can use other oils to create a certain flavor. I like small amounts (a tablespoon or two per cup of dressing) of walnut or hazelnut oil, especially if I'm including nuts and/or citrus in the salad itself. Small amounts (as small as a teaspoon) of sesame oil will give your salad an oriental taste. It's nice to toast sesame seeds and mix them in, too, if you're using sesame oil. I especially like sesame with spinach salads.
The vinegar
I never use white distilled vinegar for anything but pickling and canning. For salads, I use mostly red wine vinegar, occasionally white wine vinegar. There are other vinegars that are also good for dressings, such as Champagne vinegar (really a variation of white wine vinegar), sherry vinegar, apple cider vinegar, vinegars flavored with herbs or fruit, and so on. I have a terrific Chianti vinegar and a tomato vinegar that's heavenly on tomato salads. Many people enjoy balsamic vinegar, but I use it very sparingly, as it is somewhat sweet for my taste. In a small quantity, though, it can balance out a more acidic vinegar.
It can be a challenge to find a decent red wine vinegar in a supermarket. I tend to look for those priced a little higher, although that's not always a good guide. Supermarket brands are right out. They are usually pale and virtually flavorless. Right now I'm using French red and white wine vinegars that have 6%, rather than the usual 5%, acidity. Red wine vinegar is more robust than white; white wine vinegar is softer, not quite as tart, and is good on delicate greens like butter lettuce. Your taste must be your guide.
Other ingredients
Citrus juice: Lemon juice or lime juice can replace all or part of the vinegar in the dressing. I frequently use lemon juice, especially with white wine vinegar or on its own in the emulsion. Try one or tablespoons and taste-test before getting carried away. I sometimes use the frozen lemon juice, but I try to keep fresh lemons on hand. It does make a difference. Fresh orange juice I use in small quantities, often with a nut oil.
Condiments: A small amount of Worcestershire sauce can be good in a robust salad. I'd start with no more than a teaspoon for a cup of dressing and taste-test. More common is mustard, particularly Dijon mustard. A tablespoon of that added to a white wine dressing really gives it some oomph, plus it helps with emulsification. Use your imagination and experiment with other condiments on hand, but take them in small amounts to begin with--helps to prevent large quantities of dressing from being thrown out!
Garlic, shallots, scallions, onions: In addition to the garlic I included in the basic recipe, other aromatics can be minced and added to the dressing. Shallots are especially nice, I think. I like them so much that we grow them, thus avoiding their high price at the supermarket. Scallions and onions are fine as well--do put some of the scallion green into your dressing, minced fine of course.
Herbs: Fresh or dried herbs really perk up a salad dressing. I like oregano, basil, parsley, thyme, mint, and tarragon, to mention a few. Tarragon will add a licorice-like taste that I find especially good on spinach salads. A tablespoon of minced fresh herbs or one-half to one teaspoon of dried per cup is a good rule of thumb. You can increase or decrease the amounts according to preference. Last year I made up quite a few infused vinegars--vinegars that have had herbs steeped in them--and have kept them on hand. It's a nice way to taste herbs in your dressing just by using the vinegar and takes one step out of the dressing preparation. (Infused vinegars will the the subject of another post, possibly not until fresh herbs are ready to harvest in my garden.)
Spices: Freshly ground black pepper is a must for me. If I want a dressing with a bit of Southwestern flavor, I'll substitute lime juice for some of the vinegar and add ground cumin. Mild curry powder can also be good in a salad dressing, particularly for a salad that calls for oranges. Half-sharp paprika and ground mustard seeds may also be added, particularly for a robust salad. Experiment to find out what you like, starting with very small amounts. I'm not especially fond of celery seeds (although I do consider them a must in cole slaw dressing), but your taste may differ. I do like poppy seeds in a lemony vinaigrette.
It takes so little time to make a vinaigrette, even when you dress it up a little, that there's really no excuse to buy that sort of salad dressing (I include commercial Italian dressing in this category). Olive oil is better for you than the polyunsaturated oils used in most commercial dressings, you won't be ingesting any high fructose corn syrup, and you can vary the dressing endlessly and to your own personal taste. Why not try it tonight?