Put the tuna with its oil in a large serving bowl. Break it up with a fork, then stir in the remaining ingredients, except for the pasta. Season with salt. Cover and leave to infuse while you cook the pasta.
Cook the pasta in a large saucepan of salted boiling water for about 10–12 minutes, or according to the packet instructions, until al dente.
Drain the pasta and toss into the sauce. Serve immediately with a bottle of extra virgin olive oil for anyone to drizzle a little extra over their serving.