Q&A for How to Make a Spanish Tortilla

Yes, it can, but consider roasting the parsnips in a thicker slice, which sweetens the flavor. Boiled or sauteed parsnips might not suit every person's palate.

You can. Just remember that it will taste differently. Sweet potatoes are sometimes twice the size of the potatoes you would normally buy - if this is the case, use fewer than the instructions in this article say to use.

This is more continental European than Mexican. In Latin America, both tortillas and tortas are very different from the potato omelette described in this article.

Yes, if cooled in a food-safe way (i.e. refrigerated immediately, rather than left at room temperature for several hours).

You could serve it with saffron rice and fried vegetables of your choice, or alternatively, you could serve it as a side dish, with paella as the main.

Different fillings are just fine, but keep an eye on it as it cooks - different fillings might need to be cooked for longer.

Yes! It would be a delicious picnic meal. You could make it to anything, and take it to a picnic. Tortillas have a large variety of recipes, to PB J Tortillas, to quesadillas.

Yes, you can freeze a Spanish tortilla and later reheat it once. Make sure to not re-freeze it, since the tortilla includes egg.