Char-grilled tuna with salsa verde Ingredients 4 x 100g fresh tuna steaks 2 tbsp lemon juice ½ tsp ground Szechuan pepper 1 tsp olive oil For the salsa verde 1 (85g) bag watercress 2 tbsp fresh basil leaves 1 clove garlic 2 tbsp lemon juice 2 tsp olive oilfinely grated zest and juice of 2