Easy Vegan Sushi Recipe

Name: Easy Vegan Sushi Recipe
Ingredients: ½ cup apple cider vinegar; ½ cup water; 2 tablespoons sugar; 1 tablespoon kosher salt; 2 large carrots (cut into matchsticks); ½ cup vegan mayonnaise; 2 teaspoons sriracha (or to taste); 1 teaspoon soy sauce (optional); 1 teaspoon lime juice (optional); 1 ½ cups sushi rice (see notes); 1 ½ cups water; 2 tablespoons rice vinegar; 1 tablespoon granulated sugar; ½ teaspoon kosher salt; Sushi Filling; 5 sheets of Nori; 1 cucumber (cut into matchsticks); 1 avocado (sliced); Sesame seeds (for garnish)