Can I use regular coffee instead of Kona coffee?
Yes. Any decaffeinated coffee bean works, though Kona's smoother, less acidic profile complements beef best. Grind fresh beans just before use for optimal flavor.
How do I know when the steak is medium-rare?
Use a meat thermometer: pull the steak at 130–135°F internal temperature. It will carryover-cook 5°F while resting, landing at 135–140°F medium-rare.
Can I make the coffee rub ahead of time?
Yes. Mix the rub up to 3 days ahead and store in an airtight container. Apply it to the steak 30 minutes before grilling for best adhesion.
What if I don't have a grill?
Use a cast-iron skillet or stainless steel pan on high heat. Sear 4–5 minutes per side for a 2-inch steak, then finish in a 400°F oven until target temperature.
Is decaffeinated Kona coffee essential?
Decaf prevents caffeine bitterness in the crust. Caffeinated Kona works in a pinch but use slightly less rub to avoid overpowering the beef.