Travellers may retain vaping goods for personal therapeutic use: up to 2 vapes, 20 accessories (cartridges, capsules or pods), and 200mL of vape substance in liquid form
Although often compared to Swedish snus in terms of look and taste, chew bags feature larger cuts of tobacco leaf, while snus contains tobacco powder
Highly skilled rollers can apply the cap with near perfect symmetry, and in some cases you will notice a triple-cap, which is a common Cuban-style of rolling, as opposed to a traditional double-cap
While it's no substitute for Syrian Latakia, it has more mesquite smokiness than the overly floral and perfumey Cyprian Latakia
Prices for one betel nut and mustard stick vary between 6 cents to $1.30 (5p to 1), dependent upon the location, season and recent growing conditions
Funding: University of Chicago Medicine Comprehensive Cancer Center, Global Research Award for Nicotine Dependence from Pfizer, Womens Board of the University of Chicago Cancer Research Foundation A version of this story was first published by UChicago Medicine and written by Lily Burton.