onion water
Iraq
13th Century
Source: Raggetti, L. (2021). Ordinary Inks and Incredible Tricks in the ȀUyũn al-ᄥaqāȀiq. Brill.
Recipe Details
Ingredients
onion water
Preparation Steps
The user writes on the sheet using only onion water. The writing remains invisible until the paper is held near a fire, at which point the script becomes visible and red (p. 179).
Original Recipe Text
The user writes on the sheet using only onion water. The writing remains invisible until the paper is held near a fire, at which point the script becomes visible and red (p. 179).
Evidence
"Write on the sheet and it will not appear until you place it near to the fire, and then it will appear. This is that you write using onion water."
Remarks
The variant from manuscript L specifies that the writing will appear 'red' after thermal activation (p. 179).
Scientific Analysis
Certainty Level
Inferred
Instrumentally Verified
Not Verified
Metadata
Material Type
ink
ColorRed
RegionIraq
Approx. Year1250
Source Information
AuthorRaggetti, L.
CollectionUnknown
Language
N/A
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