Insalata di riso (Tuna Rice Salad)

• 500 g 1 lb. rice (see Notes)
• 1 can of tunafish
• A few sprigs of fresh parsley finely chopped
• the juice of one lemon
• olive oil

Plus one or more of the following flavorings, adjusting measurements to taste:

• A handful each of capers chopped gherkins and olives
• A small can of anchovies roughly chopped
• Some pickled onions and/or pimentos chopped up
• A nice chunk of Swiss cheese cut into small cubes
• A half-jar of giardiniera see Notes
• A few cherry tomatoes cut in half