Steak Banh Mi Tacos

Name: Steak Banh Mi Tacos
Ingredients: 1/3 cup Asian fish sauce; 1/4 cup vegetable oil; 3 tablespoons light brown sugar; 1 clove garlic; 1 shallot, quartered; Kosher salt and freshly ground black pepper; 1 pound skirt steak, trimmed; 1 cup granulated sugar; 1 cup distilled white vinegar; 1 cup shredded carrot; 1 cup julienned jicama; Six 4 1/2-inch yellow or white corn tortillas; 1/3 cup mayonnaise; 1 cup julienned English cucumber; 1 Fresno chile, thinly sliced; 1/2 cup fresh cilantro leaves; 1/2 cup crumbled cotija cheese