• 1 (12 ounce) bottle dark beer
• 1/4 cup lime juice (fresh)
• 2 jalapeno peppers (minced)
• 1 tablespoon red pepper flakes
• 6 scallions (sliced)
• 4 garlic cloves (minced)
• 2 tablespoons soy sauce
• 1/2 cup fresh cilantro (chopped)
• 1/2 teaspoon cumin
• 1/2 teaspoon oregano

1. Mix all ingredients together.
2. Marinate meat at least 4 hours. I marinate overnight

I found this in The Steak Lover's Companion and did a few changes to the recipe. I like spice, so I always make it a little spicer. You can adjust the amount of peppers to suit your taste. Not sure how many cups this makes, haven't made in awhile.