BE CAUTIOUS WHILE OFFERING TO SRI KRSNA AND CONSUMING SWEETS COATED WITH SILVER LEAF/FOIL/ WARAK:

You all know silver has ductile and malleable nature. It can be
converted to thin sheets on beating. Most of the un branded silver
leaf being used mostly by sweets' sellers on expensive sweets, is
procured by pressing silver pieces in intestine taken out of dead
cattle, and then beaten with hammer till it converts to sheets.
Some people have inboxedus for silver foil and their query is
welcomed, i appreciate they had curiosity to know about contents/
ingredients.
Whenever you buy, buy the silver warak (edible foil) which is 99.9%
pure silver, instead of sub standard health hazardous varieties
available in non branded local markets witha mixture of aluminium or
cadmium.The 99.9% pure silver varak is not considered harmful to the
body, since the quantities involved in normal use are minuscule, The
care to buy 99.9% pure silver varak hasto be taken when you buy silver
varak. Regarding its being veg or non veg, please note that it was
ages back (or may be non standardized unbranded vendors may still be
doing it) when the varak was not hygienic because it was manufactured
by beating the metal finely between the intestines of oxen and cattle.
Now the time is of modern techniques, a commercial group -DS Group has
introduced 100% pure and vegetarian silver foils in India by the brand
name Catch. The manufacturing process of this branded foil involves
electronically beating silverwith Hammer machine, between a special
paper, ina hygienically controlled dust free atmosphere. This is the
first and the largest plant in India to produce such foils, which has
been setup with international collaboration. Almost all ISKCON temples
too are using this branded silver foil, as the manufacturer is
reliable in making claim of its totally veg silver foil.