Cleaning: the leather is soaked in water and then in lime, the soaking cleans the leather. The skin is then softened with the use of enzymes and salting and acidification in order to preserve the skin.

Processing: There are several processing methods and each method greatly affects the quality and price of the leather as well as the nature of its use.
1) Vegetable tanning: the oldest method of processing leather. The leather is processed with a plant-based compost mixture (mainly containing tannin), for 6 months. The vegetable leather is the most expensive and least common of all. The vegetable processing preserves the "breathing" properties of the leather even after the processing. Thanks to this, it can be shaped by softening it with a water-based glue mixture, whose role is to stabilize the leather and prevent it from softening if it gets wet afterwards. This technique is used to make traditional Venetian masks. The vegetable-processed leather also absorbs fat, and is able to "tan" when not protected from light.

2) Machining with chrome: the most common machining method today. The method involves the use of chromium salts, a faster process than plant processing. Chrome processing yields soft, flexible leather in a variety of colors.

3) Synthetic processing: a method that includes the use of synthetic materials. A relatively new method that is gaining more and more popularity thanks to the speed with which the processing of the leather takes place, and thanks to its efficiency.

*Interesting fact - the word "bursa", originally from the Latin language: "bursa" which means bag, purse. Like the Greek word "birsa", which means "skin" (also the Hebrew word "tanner" - leather worker, originates from the same word). After that, the word became a description of a leather bag containing money, similar to the word Purse in English.