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Whether you are celebrating a summer weekend or just looking for a reason to fire up the grill, there is never a bad time to bring the flavors of the Southwest to your backyard. For this cook, I drew inspiration from a Guy Fieri classic to create a marinade that is bright, punchy, and built specifically for the high heat of the Big Green Egg.
The balance of the agave-forward tequila with fresh lime juice is the perfect match for the rich, beefy profile of a flank steak. This combination does more than just season the meat; the acidity works to tenderize the fibers while the tequila adds a subtle, earthy brightness that you just can’t get from a standard marinade.
Between the zip of the citrus and the savory char from the Big Green Egg, you have a perfectly balanced flavor profile that hits every note. It is a light yet satisfying meal that feels like a celebration every time it hits the table. This recipe is incredibly easy to prep and never fails to impress a crowd. The marinade does the heavy lifting, ensuring every slice is tender and loaded with citrus and spice.
Now sit back, grab an ice-cold glass of tequila (or a fresh margarita), and enjoy this post for Grilled Tequila Lime Flank Steak.
Table of Contents
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Step 1: Gather Your Ingredients
Preparing this recipe is all about building layers of flavor. Since flank steak is a relatively thin and lean cut, it acts like a sponge, soaking up every bit of the bright and spicy marinade.
I had a bottle of Sauza Blue Silver Tequila on hand, which worked perfectly with this recipe.
- The Tequila: You don’t need to break out the ultra-premium bottles for a marinade, but using a quality silver (blanco) tequila like Sauza Blue ensures a clean, agave-forward taste that isn’t masked by oak or aging.
- The Meat: Flank steak is the ideal choice here. Its long, coarse muscle fibers are practically designed to hold onto the marinade, and it loves the high-intensity heat of the Big Green Egg.
- The Aromatics: Getting the ingredients ready for the marinade was simple: cumin, tequila, soy sauce, garlic, cilantro, lime juice, jalapeno, and Serrano peppers.
The Flavor Strategy
By using both Jalapeño and Serrano peppers, you get a more complex heat. The Jalapeño provides the classic “green” pepper flavor, while the Serrano adds a sharper, brighter bite. Combined with the umami of the soy sauce and the acidity of the lime, this marinade covers all the bases: salty, sour, and spicy.
Step 2: The 3-Hour Marinade Rule
Once the ingredients were prepped, I combined them and let the flank steak soak.
I recommend a 3-hour marinade for this cook.
- Why 3 Hours? Because of the high acidity from the lime juice and the enzymes in the tequila, you don’t want to marinate this overnight. If you let it go too long, the acid will actually start to “cook” the proteins (much like a ceviche), which can result in a mushy or mealy texture once it hits the grill.
- The Sweet Spot: Three hours is the perfect window to allow the flavors to penetrate the grain of the meat without compromising the steak’s structural integrity.
Step 3: The Hot and Fast Sear
When working with a lean cut like flank steak, speed is your friend. You want to blast the exterior to develop a savory crust before the interior has a chance to overcook.
After the steak sat in the marinade for 3 hours, I took it out and preheated the Big Green Egg to 500°.
- Direct Heat: I skipped the ConvEGGtor for this cook. You want the steak directly over the lump charcoal. At 500°F, the Big Green Egg acts like a high-end steakhouse broiler, providing the intense radiant heat needed to caramelize the sugars in the tequila and lime marinade.
- The Sizzle: Make sure your grates are fully preheated. When the steak hits the metal, you should hear a loud, immediate sear. This is what locks in the juices and creates those beautiful grill marks.
I cooked the steak direct for 4 minutes per side until it measured 130° with a meat thermometer.
Precision Matters: Flank steak moves quickly from “perfect” to “chewy.” I pulled the steak at 130°F, which is the sweet spot for medium-rare after a short rest. Using an instant-read thermometer is non-negotiable here to ensure you don’t over-shoot the temp.
The Flip: At the 4-minute mark, the steak should release easily from the grates. If it sticks, give it another 30 seconds.
Step 4: The Rest and the Slice
Once the steak hit 130°F, I pulled it off the Egg and let it rest for 10 minutes.
- The Carryover: During the rest, the internal temperature will rise about 5 degrees, landing at a perfect 135°F.
- The Slice (Crucial Step): Always slice flank steak against the grain. Look for the long lines running down the meat and cut perpendicular to them. This shortens the muscle fibers, making every bite melt-in-your-mouth tender.
The “So What”: Why This Recipe Wins
This Tequila Lime Flank Steak is a total crowd-pleaser. The high heat of the Big Green Egg creates a charred, salty exterior that contrasts beautifully with the bright, citrusy zing of the marinade. It is fast, it is healthy, and it brings a massive amount of flavor to the table with very little effort.
Serving Suggestions:
The Drink: It goes without saying, pair this with a fresh margarita or a neat pour of that Sauza Blue Silver.
Street Tacos: Slice it thin and pile it into charred corn tortillas with pickled red onions and cotija cheese.
Steak Salad: Lay the warm slices over a bed of greens with avocado, black beans, and a cilantro-lime vinaigrette.
Big Green Egg Tequila Lime Flank Steak: Fast and Flavorful
Ingredients
- 1 cup roughly chopped garlic, about 3 bulbs
- 3/4 cup freshly squeezed lime juice, about 8 large limes
- 1/2 cup clear tequila
- 1/4 cup soy sauce
- 1 bunch roughly chopped fresh cilantro, leaves and stems
- 1 jalapeno pepper, seeded and diced
- 1 serrano pepper, seeded and diced
- 1 teaspoon cumin powder
- 1 tablespoon freshly cracked black pepper
- 1 1/2 to 2 pounds flank steak
- Corn tortillas
Instructions
- Combine the garlic, lime juice, tequila, soy sauce, cilantro, peppers, cumin and black pepper in a resealable plastic gallon bag. Add the steak and let marinate in the refrigerator for 2 hours. Remove from the refrigerator, and let marinate at room temperature another 30 to 45 minutes.
- Prepare the Big Green Egg by preheating to 500° cooking direct.
- Remove the steak from the marinade, reserving the marinade. Put the marinade in small saucepot and bring to a boil. Then strain and reserve.
- Put the tortillas on the corner of the grill and flip the package a few times to heat through while the steak is cooking
- Place the steak on the BGE (direct). Cook for 4 minutes, turn 180 degrees, and cook for 3 minutes more (to create cross grill marks). Flip over and finish cooking for 3 to 5 minutes, depending on desired doneness. Remove from the grill to a cutting board and let rest, lightly covered, for 5 minutes.
- Slice against the grain, and serve immediately with the reserved marinade, garnishes, tortillas and hot sauce.
Nutrition information is automatically calculated, so should only be used as an approximation.
This is a unique flavor that only 2 people out of 6 at dinner really liked. The lime and soy sauce combination is a bit unique, so consider doing on a small piece of meat and not a large amount first. I liked it, but it is a unique taste.