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Interactive maps and sourced documents
Dermolia is a shop, but also a passion. Here, free to read for private use, are my interactive maps and documents on olive oil and soap, and a few official sources I recommend.
Interactive maps
Olive oil from A to Z
An interactive map that follows olive oil from the tree to the bottle: varieties, harvest, extraction, official categories, tasting. Read from left to right, on a computer or a smartphone.
Soap, from ash to bar
An interactive map of the history of soap: the alkalis (plant ashes, Leblanc soda, Solvay, electrolysis), the fats and oils, and the great traditions (Aleppo, Nablus, Castile, Marseille, black soap, cold-process soap). Every step is sourced.
Cognac from A to Z
An interactive map of cognac: its history, from the Dutch to the appellation, its six crus on a commune-by-commune map, production, the age accounts, label terms, Pineau des Charentes and tasting. Every rule is sourced from the official texts. In seven languages, including Chinese and Russian.
Essay
Essay on soap
What soap is, how it is cold-processed with extra virgin olive oil, and what “superfat” means. Written in 2018, revised in 2026.
Bibliography and recommended sites
Official or reference sources only.
Free to read. Commercial or training use (schools, tasting courses) by permission only. For permission, a correction or a comment: info@dermolia.ch