Tuna with Ginger Salsa

Lovely on a warm summer day served with a salad garnish and a glass of chilled white wine.

Ingredients:

2 Tuna steaks (or try swordfish which is very tasty)
For the marinade:
4 tbsp Olive Oil
Juice of one lemon (or use bottled lemon juice)
2 tbsp chopped Coriander (or use dried)
1 tsp grated fresh ginger (or use 'lazy ginger' in a jar from the supermarket!)

For the Salsa:

2 large...