Warm up the olive oil in a saucepan over low heat ad garlic and let the oil absorb the garlic’s flavor for a couple of minutes (making sure the cloves don’t brown).
Add the anchovy, the onion cuted in piece and the peperoncino
Add the Frida’s Limoncello and let the alcol evaporate for a couple of minute.
Ad the tonno and warm for 2 minutes.
When the water has reached a rolling boil, add a handful of coarse salt, stir, then toss in the spaghetti and cook for the amount of time printed on the package (taste a strand one minute before the time set).
Drain the spaghetti and pour it in a serving bowl,mix with the rest of the prepartion and add the parsley.