Nut Meat Tacos with Pickled Red Onions

Name: Nut Meat Tacos with Pickled Red Onions
Ingredients: 2 tablespoons sugar; 3/4 cup plus 1 tablespoon red wine vinegar; Kosher salt; 1/2 small red onion, halved and thinly sliced; 1 cup slivered almonds; 1 cup walnuts; 1/3 cup sundried tomatoes, roughly chopped; 2 tablespoons soy sauce; 1 teaspoon chili powder; 1 teaspoon smoked paprika; 1/2 teaspoon ground cumin; 1/2 teaspoon dried oregano; 1 garlic clove, roughly chopped; 1 tablespoon extra-virgin olive oil; 8 corn tortillas; 1/4 cup cotija or vegan cheese, crumbled; 1/4 cup fresh cilantro leaves; 1 lime, cut into 4 wedges