"In the south they usually eat leaf-wrapped betel nuts which have a stronger, hotter taste and last longer. Northern urbanites prefer red lime," says Wu Chien-hui, who also sells betel nuts in Taipei. White lime gives a redder juice than red lime, which may be one reason why red lime is preferred in Taipei.
「南部多吃包荖葉、配白灰的，味道比較強烈辛辣，而且耐嚼」，也曾在台北賣檳榔的吳劍輝說，經過化學變化後白灰吐出的汁比較紅，看起來不雅，可能也是不受台北人青睞、而偏愛紅灰的原因之一。