Simple sushi

Name: Simple sushi
Prep time: 40 min
Cook time: 15 min
Total time: 55 min
Cuisine: Japanese
Ingredients: 300g sushi rice; 100ml rice wine vinegar; 2 tbsp golden caster sugar; 3 tbsp mayonnaise; 1 tbsp rice wine vinegar; 1 tsp soy sauce; 25g bag nori (seaweed) sheets; choose from the following fillings: cucumber strips, smoked salmon, white crabmeat, canned tuna, red pepper, avocado, spring onion; wasabi (optional - and fiery!); pickled ginger; soy sauce