https://www.wlrn.org/show/latin-america-report/2017-12-18/colombian-christmas-combo-why-bunuelos-are-an-iconic-navidad-tradition

https://www.gainesvilletimes.com/life/sweet-traditions/

Tortilla de patata is both delicious and ubiquitous in Spain. As you can see from the picture below, it is a dish made primarily of potatoes and egg. Among Spaniards, however, you can spark a debate about whether or not to add onion as well (grocery stores offer it premade both with and without cebolla). Honestly, though, you can’t go wrong either way.