A watermark is just a background that doesn’t repeat and is positioned explicitly. You can do this by adding a few lines of CSS to the “Extra CSS” field in the “Geeky Stuff” tab on the EasyRecipe Settings page.

html body div.easyrecipe {
  background: url(http://mysite.com/images/background.jpg) no-repeat right bottom;
} 

 Or to add a watermark to the print page use: 

html body #divERPContainer div.easyrecipe {
  background: url(http://mysite.com/images/background.jpg) no-repeat right bottom;
} 

  Replace http://mysite.com/images/background.jpg with the URL to your watermark image, right with your desired horizontal position and bottom with the vertical position. Horizontal positions can be left, right or center. Vertical positions can be top, bottom or center. Both can be an absolute position in pixels (or other CSS measure) relative to the top left of the recipe box (e.g. 10px)