We used to give one Sa' of barley as Sadaqat-ul-Fitr (per head).
Sahih al-Bukhari Book 24, Hadith 105
← Previous Hadith Allah's Messenger (ﷺ) made it incumbent on all the slave or free Muslims, male or female, to pay one Sa' of dates or barley as Zakat-ul-Fitr.

Sahih al-Bukhari Book 24, Hadith 104 Next Hadith → We used to give one Sa' of meal or one Sa' of barley or one Sa' of dates, or one Sa' of cottage cheese or one Sa' of Raisins (dried grapes) as Zakat-ul-Fitr.

Sahih al-Bukhari Book 24, Hadith 106