At Souplantation I see ranch dressing covering green lettuce on most plate. At Johnny Rockets ranch dipping is a must for eating onion rings. At McDonald's teenagers can't get enough of ranch with their french fries. At grocery stores the variety of ranch outnumbers any other salad dressing. Just as I got really curious with this ranch madness in the U.S., and knowing that many other countries around the globe don't even have ranch, Slate.com has an explainer on the phenomenon of ranch dressing.