Can you substitute cognac for dry sherry?

Yes, you can substitute cognac for dry sherry, but keep in mind that they have different flavor profiles. Cognac is a brandy with a rich, fruity taste and higher alcohol content, while dry sherry is a fortified wine with a nutty, savory flavor. Depending on the recipe, you might want to adjust the quantity or add a splash of water to balance the flavors. Consider the dish you're preparing to ensure the substitution works well with the overall taste.