01 -
Chop the parsley and gently mix it in with everything.
02 -
Toss everything into a bowl and add seasonings.
03 -
Wash the tomatoes and cut them into quarters, drain the corn.
04 -
Let the tuna drain, slice the onion into strips, chop up both bell peppers into cubes about a centimeter wide.
05 -
Throw in oil, vinegar, and sugar, then give it all a good stir.