Paella and fideua are versatile dishes. In fact the original idea was to make this dish and use up leftovers, and rumor has it that paella is an old Arabic word for ‘leftovers'. Little trivia for ya! You can make paella with sausage, chicken, scallops, clams, mussels, and all sorts of veggies; ideally they work the same. If you only use vegetables, you can replace the olive oil with butter.