1/2 c. fresh lime juice
1/3 c. salad oil
1/3 c. Tequila or lime juice
4 cloves garlic, minced
1/2 tsp. ground cumin
1 tsp. oregano
1/2 tsp. black pepper
4 to 5 sm. onions, halved
1/2 c. Aji-Mirin (rice wine)

If you can't find the rice wine, substitute bitter orange juice.

Mix all and marinate chicken or beef for 4 to 24 hours. Drain, saute and make fajitas.