Australian War Memorial
Gouache Resist on watercolour paper.
210mm x 297mm
Gouache resist is an unusual technique whereby gouache, thick, water-based (but waterproof) paint, is painted onto the paper, however areas where black is desired is left unpainted.
After the gouache has dried, the whole paper is covered in india ink. This allows the unpainted areas of paper to soak in the ink.
Once the ink is dried, the whole thing is soaked in water and the india ink is gently rubbed off. The water removes the ink that's lying on top of the gouache paint but not the ink that has soaked into the paper. The gouache paint also remains.
The result is a vibrant image with stark black lines... much like the linocut print or woodblock print.