Zerkall is a German paper, and both Zerkall and Hahnemuhle have similar characteristics with a soft ‘waterleaf’ feel, making them preferred by many as the most sensitive paper for aquatint printing. Additionally, the Zerkall mill is renowned for its soft lightweight bookmaking papers in both 120gsm and 145gsm. (the 120gsm weight has unusual irregular laid lines, making the paper resemble a sheet of very old handmade paper).