[Sca-cooks] lard vs. olive oil vs. butter

[Lawrence Bayne]

Realizing that this is just a tangent,,,

Reading somewhere a long tikme ago; The Romans came up with "margarine" centuries ago by mixing small amounts of lard/indigenous animal fats, with butter, salting the mixture, and Then wrapping with parchment and keeping the total submerged inside water barrels. This managed to extend the butter supply for weeks rather than days.
Wish I could remember where I read it.
BB
YIS
Lothar