Steak-Tacos mit Chimichurri und Guacamole

Ingredients

• 1 jalapeño
• 1 handful cilantro
• 5 garlic cloves
• The juice of two limes
• The juice of one orange
• ½ cup olive oil
• 2 tbsp vinegar
• 2 tbsp Worcestershire
• 1 tbsp brown sugar
• 1 tbsp cumin
• 1 tbsp salt
• 1 tsp pepper
• 2-3 lbs flank steak 
• 10-12 tortillas
• 2-3 cups cotija cheese, shredded
• 1 red onion
• 1 cup fresh parsley
• ⅓ cup red wine vinegar
• 2 garlic cloves
• 1 tsp crushed red pepper
• ½ tsp ground cumin
• ½ tsp salt
• 3 avocados, ripe
• A squeeze of lime juice
• 1 tbsp cilantro, finely chopped
• 1 tsp garlic powder
• Salt and black pepper