Can I use cooking sherry instead if Marsala?

Yes, you can use cooking sherry as a substitute for Marsala wine, though the flavors will differ slightly. Cooking sherry is typically saltier and less complex than Marsala, which is sweeter and has a richer profile. If you're looking for a closer match, consider adding a bit of sugar or a splash of balsamic vinegar to balance the flavors. Always taste as you go to ensure the desired outcome in your dish.