Recipe: Imperial Yellow Ink
In the 19th century, "Imperial Yellow" was originally made with buckthorn berries. There was also a synthetic dye of the same name.
Imperial yellow ink is transparent and has an intense yellow with a slight green tint. This ink darkens a bit when exposed to light. It has a slightly acidic smell and dries up a little shiny. After about two weeks, a sediment may form.
Processing
Note
The rim of the jar should always be wiped clean before closing, otherwise the ink can dry, crack and small chunks may fall into the ink when re-opening the jar.
The production requires the following tools: a scale, mortar and pestle, an enameled pot, glass rods or wooden sticks for stirring, glasses, funnels and filters.
Water
Only demineralized water (#65000) is used in the recipes.
Color result
Since many ingredients used in ink recipes are of natural origin, the color result may vary. Deviations from the original recipe may also change the result.
Filtration
The inks are filtered with paper filters.
Cooking
Keep the cooking pot closed with a matching lid.
Shelf life
Moldy ink should not be skimmed off. Please dispose if the ink.
Cleaning
Pots are best cleaned with hot water and a small amount of citric acid (#64150).
