Mnin: "Mnin" isn't a common term associated with Egyptian cookies. It's possible it's a misspelling of another word or a specific type of cookie offered by Etoile that might not be widely known.
Quantity: A 1 kilo package (approximately 2.2 pounds) containing 80 pieces seems unusual. Cookies are typically sold by weight or by the number of pieces in a box/package. It's more likely it's one or the other, not both.