Preheat smoker to 225°F. Prepare ribs by trimming fat cap and silver skin off the top.
Rub olive oil over the short ribs. Mix rub ingredients in bowl and rub outside the short ribs.
Place in the smoker, close the lid and smoke for 3 hours without opening the lid.
After 3 hours, start spritzing the the short ribs with apple cider vinegar, spritzing every hour. Continue to smoke until the internal temperature reaches 205°F.
Remove from the smoker and cover with foil, letting it rest for 30 minutes before serving.
Notes
Use oak or cherry wood for smoking. You want a good hard wood for the smoke flavor.
If you don't want to make your own spice rub, just use store-bought.
Wrap in foil at 160°F if you want to speed up the cook time and get past the stall.
Let the short ribs rest for 30 minutes before serving which lets the juices stay inside.