I smoke them for about 1 1/2 - 2 hours and then foil for 30-45 minutes, back on for another 45 or so to get the bark back and done. This is at 275f +/-
good luck
So I have always smoked spares and St. louy ribs but I am wanted to cook a PILE (90) of baby back ribs but have not done them before.
What are your normal smoke times for baby back ribs?