If you have ever picked up a piece of kaju katli, barfi or peda, chances are you have noticed the thin, shiny silver layer on top. Known as vark, varak or warq, edible silver leaf has long been associated with Indian sweets and festive food. But why do traditional mithai makers use silver? Is it purely decorative, or does the practice have a deeper history? Let’s find out. (Also read: Everyday explained: Why do airplane windows have rounded edges? )
Vark is an extremely thin sheet of edible silver. It is made by repeatedly hammering silver until it becomes so thin that it can be placed delicately over sweets and other foods. Unlike ordinary silver foil, food-grade vark is specifically produced for culinary use. It is generally made from highly pure silver and is used in very small quantities. Silver also has antimicrobial properties, which contributed to its historical association with food preservation. However, there is limited evidence that the extremely thin layer of vark used on modern sweets significantly extends their shelf life. For many, it has become part of the visual identity of celebratory Indian food. Food-grade silver leaf is intended for culinary use, but consumers should ensure that the product is genuinely made for food consumption and not decorative metallic foil. Food-grade silver leaf is intended to be consumed in the tiny quantities used to decorate sweets. However, the quality and manufacturing process matter. Consumers should be cautious about products that may contain imitation foil or non-food-grade metals. Genuine edible vark should be manufactured specifically for food use and meet applicable food-safety standards.
The use of vark therefore isn’t simply about making a sweet look attractive. Because not every shiny foil used for decorative purposes is necessarily edible, this is particularly important. Today, its main purpose is decorative and cultural.
