Simplify the following text for a Grade 5 native English-speaking person.
Original: Mithaecus 's cookbook was an early one , but most of it has been lost ; Athenaeus quotes one short recipe in his Deipnosophistae .
Simplified: Mithaecus 's cookbook was an early one , but most of it has been lost . Athenaeus quotes one short recipe in his Deipnosophistae .