Who was credited with founding the first restaurant?

The correct answer is Jean Boulanger, who is credited with opening a business that can be recognized as the first modern restaurant in the late 18th century in Paris. The concept of a restaurant, distinct from inns or taverns, was characterized by a menu offering a variety of dishes made available to customers who could order individually, rather than having to take a full meal at a set time. Boulanger's establishment offered a selection of soups and other dishes, with patrons able to choose what they wanted, marking a significant shift in dining practices of the time.

The other figures, while pivotal in culinary history, did not establish the restaurant concept. Marie-Antoine Carême is known for his contributions to French cuisine and the development of classical culinary techniques and presentations. Auguste Escoffier further modernized the kitchen and is known for his organizational system in the kitchen hierarchy and menus. François Vatel was a celebrated chef known for his work at the court of Louis XIV but is primarily associated with the presentation and style of meals rather than the establishment of restaurants themselves.