Initially I thought pickles are popular here in India only , but while making a search I found that these are popular world wide. These may not be spices like the Indian pickles but sure are tangy and pep up the food.
Here is a quick Vietnamese pickle which I served with the Vietnamese meal.
All you need to do is peel carrots, cucumbers, radish.., you can use any other veggies too. Cut these into julienne and immerse them in a jar full of water.Add salt , sugar and vinegar. Wait for 2 days and it is done.