Does anyone have a recipe for ranch dressing?

I have been unable to find a dressing in the store that tastes as good as the kind served in most restaurants. Does anyone have a good recipe that they have actually used?

Thank You.

I'm more of a "start dumping stuff in a bowl" kind of guy.

I usually do this -- about 1 part Mayo, 1 part Sour Cream, then enough buttermilk or milk to thin it down to a barely pourable consistency.

Then, flavor with -- dill (quite a bit), oregano, onion powder or very, very finely diced fresh onion or snipped chives, garlic powder or finely minced or mashed garlic, celery seed, salt, and pepper to taste, plus just a tiny pinch of sugar to bring out the flavor. Can also add just a small squeeze of fresh lemon juice to enhance the flavor as well.

To make about a little more than a cup of dressing, start with a scant half cup each of mayo and sour cream, add about 2-3 tablespoons of milk or buttermilk, about a teaspoons of dill, half a teaspoon each of the rest (assuming you are using all dried herbs and spices -- if you use fresh, use 2-3 times as much of the fresh). Of course, taste is subjective -- you may like more or less of some of these herbs and spices.

Also very nice to add some finely grated cucumber flesh to it to make a cucumber ranch. Or a bit of grated parmesan to make a cheese ranch. You can also sub yogurt for some or all of the sour cream if you wish.

...what brand of dressing it is. Chances are (unless they are making their own) that you can then find it in a store. When I've been in a restaurant supply store I've seen the gallon-size jars of Hellman's ranch dressing. Might be that.