I love the mono print. I've never heard of those inks; not surprising though since we live no where near an art store.Do you mind if I ask what kind of gouache you use. I've been thinking of getting some gouache for a while. I usually work with watercolors for sketching.
Holly, you can order Akua inks online - they are non toxic. I have used Windsor and Newton and also Acryla gouache which has a little acrylic mixedin.
I'm hungry! These are marvelous ... so refreshing.