This recipe is from the 1968 McDonald's Manager's Handbook put out in 1969 (1968 year) They quickly removed the recipe after realizing they had a very appealing "secret sauce." It was included as an emergency recipe in the event a particular store ran out of the pre-made sauce. Enjoy!
Recipe adapted from Todd Wilbur's version of McDonald's Shamrock Shake www.TopSecretRecipes.com. I used to absolutely love it when McDonald's brought out their Shamrock Shakes around St. Patrick's Day. The past couple of years I haven't been able to have it because of the dairy, so I was thrilled when I found this copycat recipe! Just use the soy ingredients to make it dairy-free.
One of the favorite items that is on the menu is the Barbecue sauce that was original made fresh in the store and used to dip the wings, the original chicken and now the chicken strips. Now it comes in a bag and all we have to do is add hot water and keep warm.
Well, I can't tell you HOW I got the "secret ingredient", but it's one of those things where you kind of say to yourself, "Now why didn't I think of that"? Coffee creamer! The powdered kind. That's it--simple I know! I grew up on these things--a must have at the mall--and trying to make them at home just wasn't quite right....try this. You may need to fiddle with the amounts some. When I make this recipe the blender is topped off - about 1/2 inch from the rim, but I don't really measure anything when I make it--i just throw stuff in until it tastes right.