Homemade Spanish sardines you can make at home from scratch with minimal ingredients that are surely already in your pantry. So yummy, you might ditch buying the commercial version. And this is more economical as well.
Note: if you prefer additional olive oil in your cooked sardines, add them during the layering process (than after the sardines are cooked).
Find it online: https://feastfulfork.com/how-to-make-spanish-sardines-at-home/