Question

Silver is used to decorate sweet. Why ?

Answer 1

Vark, also called varak (also silver leaf,German paper), is anyleaf composed of pure metals, typically silver but sometimes gold,[1] used on South Asian sweets. The silver is edible, though flavorless. Varak is made by pounding silver into sheets, a few micrometres (µm) thick, typically 0.2µm-0.8 µm. The sheets are typically backed with paper forsupport; this paper is peeled away before use. It is fragile and breaks into smaller pieces if handled withdirect skin contact. Those leaves in the 0.2 µm thickness tend to adhere to skinif handled directly (due to thickness close to inter-atomic distance)[clarificationneeded]. Vark sheets are laid or rolled over some South Asian sweets.
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Answer 2

It is called as Vark , is super fine filigure foil sheet of pure metals, used to decorate sweets and food to make those look more appetising. The silver and gold are edible,though flavourless.