Why Did Medieval Builders Add Hair, Blood, or Beer to Mortar Mixes

How Medieval Peasants ?
Why Did Medieval Builders Add Hair, Blood, or Beer to Mortar Mixes

From blood and beer to hair and milk — medieval builders mixed life itself into stone. Discover the strange science behind walls that have lasted a thousand years.
🔔 Subscribe to Medieval History for more untold stories from the Middle Ages.

#MedievalHistory