6 rectangular cubes of chilled watermelon (approx 6cm x 2cm)

Approx 1/3rd finely chopped red chilli pepper (seeds removed)

Finely chopped ginger (tiny bit for flavour)

12 coriander (or parsley) leaves

4 tbsp soy sauce

Few drops of basil oil (olive oil or avocado oil will do)

2 tbsp of olive oil

Pinch of sea salt

1 lime

6 basil leaves

120g fresh tuna loin - cut into 6 (you can ask your fishmonger to slice it nigiri style)