Portraits of Audrey Hepburn and Charlie Chaplin, views of Venetian canals or a growling lion, these artworks all have something in common outside hefty pricetags, they're edible.

Long known in the West, "chocolate painting" was introduced in Russia about a decade ago but until lately, remained the preserve of the elite, with pieces costing up to $1,000. Irina Eldarkhanova, whose family-run firm holds the country's sole patent for chocolate painting, said one guest to the 2011 wedding of Britain's Prince William and Kate Middleton commissioned the couple's chocolate portrait as a gift.

Yet more and more "ordinary" shoppers are seduced by this luxury, like Tatiana, a sales manager at a Moscow clothing shop,

"That can't be true!" cried her eight-year-old nephew Sergey when she offered him a small picture of a sailboat rocking on the waves. "It's really chocolate!"

Tatiana, who did not give her last name, said her nephew has "checked" his gift with a lick at least 20 times but not yet dared take a bite."My colleagues gave me something similar, a picture of a vase filled with roses, on March 8, International Women's Day," the 35-year-old said. "I knew immediately what I wanted to give Sergey for his birthday."

And while such painting in the West can range from kitsch art to a clever gift or a craft for children, Eldarkhanova sees things differently. "Chocolate painting is, to us, a work of art created using a special material," the businesswoman, whose firm started in 2001, told AFP. "It allows us to perfectly express emotions," said an equally passionate artist for the firm, Vitali Ponomarev. "It's about anticipation, of a party, of love, of joy."

Ponomarev paints with softened white chocolate mixed with apple, orange or cherry alcohol, adding food dyes to vary or intensify his colours. The "paint" sets almost immediately so he works swiftly on a base of white chocolate, using his fingers or tiny palette knife.

It can take up to three days to finish a work, which weighs an average 1.5 kilogrammes and measures at most 75 centimetres, he said. A painting can be eaten up to one year after production, said Eldarkhanova, or admired for about 10 years provided an appropriate temperature is maintained.

Confael's chocolate paintings were bought mainly by European or Middle Eastern royalty, famous politicians, sports stars or other "prestige" clients to offer as gifts.

The last pope, Benedict XVI, a Saudi sheikh and former Ukrainian president Leonid Kuchma were all offered their edible likenesses. Yet despite big pricetags that run from 450 euros to 1,000 a piece, more and more everyday Russians are ready to pay for such a work.

"Men love to order their portraits while companies ask us to draw their office buildings," said Eldarkhanova.

And the collapse of the ruble, after Western sanctions for Russia's role in backing separatist rebels in eastern Ukraine combined with falling prices of oil, a pillar of Russia's economy, has not affected business.