If you're familiar with Roman food culture, you likely know the phrase giovedi gnocchi, or gnocchi Thursday. This expression originates from the saying  Giovedì gnocchi, venerdì pesce, sabato trippa (Thursday dumplings, Friday fish, Saturday tripe) –  a maxim rooted in the Trastevere quarter.

The saying originated from lower-class food rationing and the people's need to maximize what ingredients they had at their disposal. Gnocchi, a substantial, high-calorie dish, was prepared on Thursday in anticipation of Friday, when, according to Catholic tradition, people fasted, abstaining from meat. On Friday, Romans traditionally ate fish-based dishes, such as chickpeas and cod, a dish still served on Fridays in the old-fashioned Roman taverns.