- Soak the watermelon cubes in the soy sauce for 10 seconds, then remove them, drain and put on a plate.
- Put some ginger, chili, 2 coriander leaves and a little freshly grated lime zest on each cube.
- Remove the cubes onto the serving plate. Carefully place a piece of tuna on top of each cube and sprinkle with sea salt.
- Grate a little more lime zest onto the tuna.
- Drizzle sparingly with olive and basil oil (or whatever 2 oils you are using) over the cubes and around the plate.
- Scatter the basil leaves over plate. Serve immediately.