Insalata di riso (Tuna Rice Salad)

• 500 g rice see Notes
• 1 tuna canned
• parsley finely chopped, a few sprigs, fresh
• lemon juice
• olive oil

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

• capers chopped gherkins and olives, a handful each
• anchovy roughly chopped, small can
• pickled onion chopped up
• pimento chopped up
• swiss cheese cut into small cubes, a nice chunk
• giardiniera see Notes, half-jar
• cherry tomatoes cut in half, a few