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SICHUAN, January 20, China Daily -- A manufacturer of Chinese liqueurs, Chen Chao wanders through the bamboo-covered mountains of southwestern China's Sichuan province to his "cellar", where he will check on this year's prize blend.

forest industry-1.21 Liqueur gets unique flavor with bamboo

A tourist in Yibin tries Wuliangye, a white spirit injected into live bamboo trunks as an unconventional aging technique. [Photo/Agencies]

In the absence of an oak barrel, the 30-year-old uses live bamboo trunks to age his spirit, a method reputed to confer a unique aroma and even medicinal benefits.

The cereal liqueur is introduced into bamboo trunks "via high-pressure injection techniques", he says.

Young bamboos are preferred, he says, because they "heal" within days, allowing the spirit to mature before the trunk is finally cut in early April, in time for the annual Qingming, or tomb-sweeping festival, when many Chinese honor their ancestors.

During the aging process, "the liqueur mingles with the flavone (the liquid released by the trunk) and the sap of bamboo", Chen says, referring to two ingredients renowned for their "detoxifying" effect and contribution towards healthy lungs, according to traditional Chinese medicine.

This method also reduces the alcohol content of the beverage, since the bamboo absorbs it.

"Our production is fairly limited, roughly 50,000 to 60,000 bottles per year, each containing between 500 and 550 millilitres," Chen says, with a total annual output of at least 25,000 litres.

But he now hopes to increase that amount by using a "less invasive" and more efficient injection technique, in a bid to fend off competition.

"Previously, few people knew about bamboo alcohol, because the production was kept confidential. This is changing," he says.
Chen learned the traditional technique in the eastern province of Fujian´╝Źwhere it originated.

He then launched his own brewing business in 2015 in Sichuan, in the heart of the famous Shunan Bamboo Sea, a vast forest known for the production of Wuliangye, a white spirit made with sorghum, sticky rice, maize and wheat.

But his business has suffered since China launched a much-publicized anti-corruption campaign in 2012.

The anti-graft drive has included a ban on giving extravagant gifts like expensive wines and spirits to public officials, which "sent our business plunging", Chen says.

During the last Dragon Boat Festival in 2016, his sales collapsed by two-thirds compared to the previous year.

But recovery may be in sight. Wuliangye-the brand behind the eponymous spirit-has reported an 18 percent increase in its turnover and net income during the first half of 2016.

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