One commonplace example is the custom of chewing paan (betel leaves with areca nuts, usually with a bit of lime and other ingredients). While it is common across the Indian subcontinent, the areca nut, called ‘supari’ in Hindi, is originally from South East Asia and was chewed across the region and as far north as Taiwan. Paan is still widely consumed in India but, in recent years, has become less popular in the urban areas of South East Asia. Still, the leaf and nut continue to play an important cultural role and are used in many ceremonies. I have eaten them at a wedding in Bali and found
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