Varak
From Cookipedia
Vark, Varak or Varakh is a foil of pure elemental silver that is used for garnishing Indian sweets such as barfi and others. The silver is edible, though flavourless.
Vark is made by pounding silver into a thin sheet a few micrometres thick. When sold, Vark is backed with paper and peeled before use. It is extremely brittle and breaks into smaller pieces if touched.
Vark sheets are laid or rolled over Indian "sweets" made from dates, nuts and various fruit and vegetable based rolls or sheet candies. Most of these "sweets" are made with minimal sugar and may not taste sweet to the American or European palate, but have a rich, nutty taste.