Jalapeño and Lime Chicken Burger with Corn Smash

Name: Jalapeño and Lime Chicken Burger with Corn Smash
Prep time: 25 min
Cook time: 1 h 15 min
Total time: 1 h 40 min
Cuisine: Latin American, American
Ingredients: 1 fresh jalapeño pepper, destemmed and deseeded; 3 garlic cloves; ½ oz extra virgin olive oil; 1 tsp salt; 1 ½ oz cilantro, leaves and tender stems (approx. 2 bunches); 1 oz lime juice; 2 chicken breasts, skinless, boneless, halved horizontally (approx. 24 oz); 4 oz yellow onion, in pieces; 1 garlic clove; 8 oz frozen corn; 2 oz sour cream; ½ tsp salt; 3 radishes, trimmed, thinly sliced; 10 sprigs cilantro leaves, plus extra to garnish; 1 can pickled jalapeños, 1 tbsp liquid, plus jalapeños thinly sliced, to serve; 1 tbsp lime juice; vegetable oil, to fry; 4 burger buns; arugula, to serve; 1 avocado, sliced