Aluminum foil is a valuable tool for preparing bbq ribs, pork butts, and brisket. When used correctly, it helps improve consistency and predictability in barbecue preparation.
Some might call it "The Texas Crutch", but I'm not currently aware of any bbq contest winners that do not use it in abundance. I'm not saying you can't win without it, but I'd wager that 95% of all bbq contest champions are using it when they prepare their contest meats.
Here are some examples of how I use it:
For ribs.....I slow cook my baby backs for 2 1/2 hours at 225 degrees. Then I wrap them in a double thickness of foil with the meat side down with three ounces of apple juice or grape juice or a mixture of both, for 1 1/2 hours cooking at 250 degrees. After an hour, I remove the foil, brush on my favorite sauce, and cook for 30 or 40 minutes until the meat starts to pull away gently from the bones.
For pork butts...I slow cook the pork butts and briskets for 5 hours at 225 degrees and wrap in a double thickness of aluminum foil. I cook them until the internal meat temperature reaches 198 degrees as measured with a meat thermometer.
Using a double thickness of foil prevents the rib bones from puncturing the foil and the juice running out. When cooking bigger pieces of meat like briskets and pork butts, there is a lot of juice and aus jous that collects in the foil. A double thickness helps prevent leakage and preserves the juice for basting the meat later on, if desired.