Southwestern Beef Stir-Fry

2 lb. sirloin, trimmed and cut into bite sized strips
2 Tbsp. pressed or finely minced garlic
1 Tbsp. oregano
1 Tbsp. cumin
1 lime
2 Tbsp. vegetable oil
1/2 C. diced onion
1/2 C. green onion, white part only, thinly sliced (reserve green parts, thinly sliced, for garnish)
1/2 C. minced Poblano pepper
1 C. peeled, diced tomato
1 C. black beans, rinsed and drained
1 C. beef stock
1/4 C. prepared coffee
1 oz. tequila (optional)

Toss beef with garlic, half of the oregano , and half of the cumin. Add a sqeeze of lime juice and allow to marinate for 1 hr.
Heat oil over medium-high heat in a large saute pan until it is almost smoking. Add the onion and saute until clear, then stir in marinated beef. Reduce heat to medium and add the white part of green onions and more lime juice. Stir in Poblano pepper, tomatoes and black beans. Simmer 5-7 min.
Add the beef stock, coffee, and tequila, if desired. Be sure it is heated through.
Garnish with green onion tops and serve with tortillas or chips.