One thing the Vietnamese do enjoy of an evening is a bit of grilled/BBQ'd meat with a few beers. I do too, but didn't partake as it is very much a communal activity and I was there alone most of the time.
But every day as I left the hotel to attend to business, I had to pass this large grill place and negotiate my way around the sidewalk to get past where, each morning, they started roasting a whole pig in preparation for the evening trade. They did a second in the afternoon. The head and feet have been removed to be used in another manner.
