What is a key characteristic of the grilled cheese option?

The key characteristic of the grilled cheese option is that it features a selection of cheeses melted between bread. This is fundamental to the identity of a grilled cheese sandwich, as the combination of different cheeses can enhance its flavor and texture. The focus on cheese is what differentiates it from other types of sandwiches or dishes, making it a classic comfort food item.

While it is common for some places to offer a side of salad, this is not inherent to the grilled cheese itself. Additionally, grilled cheese does not typically contain meat, nor is it standard for it to incorporate spicy sauces, which further underscores the central role of the cheese in this dish. Thus, the emphasis on melted cheese between bread is what defines the essence of a grilled cheese sandwich.