Context : Alumni of the École Normale Supérieure Lettres et Sciences Humaines (1979), Bruno Laurioux passes his History Agrégation (1982) and a PhD at the Pantheon-Sorbonne University with a thesis on ``The Cookbooks in the West at the end of the Middle Ages'' (1992). 
Answer : École Normale Supérieure Lettres et Sciences Humaines
What university did Bruno Laurioux attend?