Carne Asada Sandwiches With Chipotle Mayonnaise

• 1 red onion, thinly sliced
• 1/4 cup red wine vinegar
• 3 cloves garlic
• 2 teaspoons salt
• 2 tablespoons lime juice
• 2 tablespoons olive oil
• 2 lbs round steaks (1/4 - 1/3 inch thick, can use flank or skirt steak as well)
• 1/2 cup regular mayonnaise or 1/2 cup light mayonnaise (I use Hellman's light mayo)
• 1 tablespoon pureed canned chipotle chile in adobo (you can usually find this in the ethnic aisle of a larger grocery store)
• 6 6 focaccia bread or 6 other buns
• 2 avocados, halved,pitted,peeled,thinly sliced

1. Rinse the onion slices in a strainer under cold running water.
2. Pat dry; place in a bowl.
3. Cover with the red wine vinegar.
4. Set aside for 30 minutes or up to 2 hours.
5. Pound the garlic with salt, using a mortar and pestle, to make a paste.
6. Add 1 tablespoon of the lime juice and incorporate it into the garlic.
7. Slowly add the olive oil, stirring with the pestle to incorporate it.
8. (If you don't have a mortar and pestle, this can be done in a food processor.) Spoon the garlic mixture over the steak, spreading it with the back of a spoon.
9. Season with salt.
10. Turn the meat over and do the same with the other side.
11. Combine the mayonnaise, pureed chipotle and sauce and remaining 1 tablespoon of the lime juice in another small bowl.
12. Grill or fry the beef over high heat, 3 minutes.
13. Turn; cook to medium rare, 1-2 minutes.
14. Set aside.
15. Cut the rolls in half; spread each half with 1 tablespoon of the chipotle mayonnaise.
16. Arrange the avocado slices on the top half of the roll; top with a few onion rings.
17. Cut the meat into pieces roughly the size of the bread; arrange on the onion rings.
18. Add the bottom half of the roll; press gently to compact everything together.

red onion, red wine vinegar, garlic, salt, lime juice, olive oil, regular mayonnaise, chipotle chile, bread, avocados

Taken from www.food.com/recipe/carne-asada-sandwiches-with-chipotle-mayonnaise-94078 (may not work)