Carlo Romiti has been painting for years using earth which he himself collects. His painting starts in the very same moment he scrapes at an embankment and collects the first handful of earth “di più ragioni di colori”, in the very same places described by Cennini.
"E pervegnendo in un vallicello, in una grotta
molto salvatica, e raschiando la grotta con
una zappa, io vidi vene di più ragioni di
colori: cioè ocria, sinopia scura e chiara, ..."
"The Book of Art or The Treatise on Painting" - XIV century
The raw earth, well-dried, hand pounded in stone mortars, sifted and sometimes pounded again, is mixed with water, egg or different glues, or even with flax oil, depending on the stands he uses.