Portobello Mushroom Rolls

Name: Portobello Mushroom Rolls
Prep time: 35 min
Cook time: 1 h 30 min
Total time: 1 h 30 min
Yield: 36 pieces
Ingredients: 3 fresh portobello mushrooms; olive oil; 1 ½ tsp tamari; 1200 g water; 250 g brown short grain rice; 2 Tbsp brown rice vinegar; 1 tsp caster sugar; ½ tsp fine sea salt; 1 garlic clove; 20 g fresh root ginger; 1 spring onion; 80 g tamari; ½ tsp brown sugar; 1 fresh red chilli; 4 nori seaweed; 2 Tbsp black sesame seeds; 4 tsp mayonnaise; 4 spring onions; 1 fresh red chilli