CNN — Mong Shuan was just 16 when she turned to an unconventional source of income: selling betel nuts from a little stall in northern Taiwan. Vendors like Mong, who left the job in February, are known locally as “betel nut beauties.” The phenomenon emerged in the late 1960s, when the Shuangdong Betel Nut Stand, a stall in rural central …
