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Natural pigments may require some preparation. You may need to grind them in a morter and pestle. This, plus overnight slaking - soaking in water - will help you avoid "hot spots" of color, or bleeding or running pieces of pigment.
If being used in a water based recipe they ned to be slaked. Add enough water to the pigment to make a smooth runny paste, then let the mixture stand overnight. Some pigments don't dissolve well in water and and them may be slaked in alcohol or vodka. |
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