Windsor and Newton Inks (Vermillion, Carmine, and Black India Ink) after drying with the application of salt.
My own "ink" made from Procion dye (no soda; no salt) in black and fire red seemed to work well so far. The lutradur was not laying flat as it dried on this piece, so the salts and inks could run a bit, making this lovely coral patterning. The irregularities caused or allowed for movement as it dried. Nice! Even though I brushed off the rock salt, there's still a sparkle to these pieces that doesn't show in the pics.
Here are some detail shots for the coral piece :
Salt crystals formed on the blotter board on which the lutrador pieces were drying.
