Sushi cake

Ingredients

• 200 g cooked sushi rice
• 2 cooked halved prawns
• 1 tbsp trout roe
• 1 tsp lumpfish roe
• 1 handful of rocket sprouts (or garden cress)
• 3 mangetouts
• 1/2 avocado
• 1 baby cucumber
• 1 radish
• 1 yellow datterini tomato
• 100 g smoked salmon
• 2 tbsp mayonnaise
• wasabi paste to taste
• 1 fresh egg
• 1 tbsp milk
• 1 tsp potato flour or cornflour
• 2 pinches of sugar
• 1 pinch of salt
• 1 tsp vegetable oil
• 5 shiitake mushrooms
• 1 tbsp maple syrup (or honey)
• 1 tbsp Kikkoman Naturally Brewed Soy Sauce
• 1/2 tsp sugar
• 100 ml water
• Kikkoman Naturally Brewed Soy Sauce