Glazing Salz's California Saddle Leather TM involved using a glazing jack. Each side of the hide was glazed twice to create a mirror-like surface. The protein (albumin) used in the glazing process was derived from egg whites. After drying on the surface of the leather, the glazing jack used a large chunk of glass to burnish the surface of the leather with heat and pressure. This smoothed the grain or surface and brought up a rich luster. On some leathers this was the final process. On others like the California Latigo TM, it took place in the middle of the finishing process. Dyes were then added to enhance the color.

Source of information: Jeremy Lezin