Clean 2 garlic cloves and mince them. Heat some oil in a frying pan and add the anchovy fillets and the minced garlic. Wait a few minutes, then add tomatoes wedges.
Fill a large saucepan with water, put the lid on and bring to the boil over a high heat.
In the meantime prepare Sunny HeRBs rocket pesto: wash carefully rocket leaves, dry them thoroughly and put them in a food processor. Add pine nuts, Grana Padano cheese, garlic and a pinch of salt.
Add the olive oil while the food processor is running, pulse at minimum speed, till you get a smooth paste.
Cut the tuna into small cubes.
Poach gnocchi in batches in the pan of lightly salted water. When they float to the top, strain them.
Pour in a big bowl and combine together tomato sauce, gnocchi, rocket pesto and tuna. Cover with a lid for a few minutes before serving.
Garnish each plate with fresh Sunny HeRBs rocket leaves.