The main text of the book and the guide for the wise, by Al-Mu'izz ibn Badis

Recipe Details

Preparation Steps

Take sal ammoniac and soak it in water; do not increase the water. Let it sit until it dissolves. If it dissolves and becomes like water, write with it whatever you wish on parchment or paper. Let it dry until it disappears. Then fumigate it with Lebanese frankincense; if the smoke touches it, that writing will appear.

Original Recipe Text

Take sal ammoniac and soak it in water; do not increase the water. Let it sit until it dissolves. If it dissolves and becomes like water, write with it whatever you wish on parchment or paper. Let it dry until it disappears. Then fumigate it with Lebanese frankincense; if the smoke touches it, that writing will appear.

Remarks

Secret ink revealed by Lebanese frankincense smoke.

Scientific Analysis
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Material Type
ink
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