The Art of Crafting the Perfect Rainbow Roll Recipe

Name: The Art of Crafting the Perfect Rainbow Roll Recipe
Cuisine: Asian, Japanese
Ingredients: 2 cups of short-grain sushi rice; 2 ½ cups of water; ¼ cup rice vinegar; 2 tablespoons sugar; 1 teaspoon salt; 1 cucumber, julienned; 1 avocado, sliced; ½ pound imitation crab meat or real crab meat, shredded; Toppings; ¼ pound each of fresh sashimi-grade fish tuna, salmon, and yellowtail, thinly sliced; Optional shrimp or eel for added variety; Nori sheets (seaweed); Soy sauce