For the salad:
1/2 lb fresh tuna
1/2 teaspoon coriander
1/2 teaspoon mustard powder
1/2 teaspoon sea salt
1/2 Tablespoon canola oil, for searing
1/2 bag fresh spinach
1 handful cilantro, chopped
1 plum, cut into small slices
1 handful almonds, slivered
Combine the coriander, mustard powder, and sea salt in a small bowl and stir together. Rub on both sides of the tuna. Heat the canola oil over medium-high heat, and once hot, sear the tuna for 2 minutes on both sides. Remove from the heat.
Slice into thin strips and serve over a salad of spinach, cilantro, plums, and almonds.
For the dressing:
1 Tablespoon rice vinegar
2 Tablespoons soy sauce
1 Tablespoon sesame oil
4 Tablespoons canola oil, salt and pepper
Whisk all 4 ingredients together.