Basic Permanent Black Ink: 1 egg yolk 1 tsp gum arabic 1/2 cup honey 1/2 tsp lamp black (buy in a tube or make by holding a plate over a lit candle) Mix egg yolk, gum arabic and honey in a small bowl. Add lamp black to make a thick paste. Store in a jar. To use, mix a little paste w/ a little water to make a fluid. Prussian Blue Ink: Dissolve Prussian Blue (available as laundry bluing) in water. Makes a rich blue ink. Brown Ink: 1/2 cup boiling water 4-5 teabags (or 4 tsp of loose tea) 1 tsp gum arabic Pour boiling water over the tea bags in a large bowl, add gum arabic. Steep for 15 minutes.Squeeze teabags to extract as much tannic acid as possible. Strain and allow to cool before bottling. Use with a paintbrush or quill pen, etc.