What does the phrase "like a pig going for truffles" represent? Persistence?

Yes, persistence -- with "tunnel vision" in a way -- not looking right or left, just straight for the truffles and nothing else!

There is also the interesting juxtaposition of putting "pig" in the same phrase with "truffles" since pigs are supposed to be messy and sloppy and truffles are very expensive and difficult to find.
http://www.herbarium.usu.edu/fungi/FunFacts/Truffind.htm

http://www.stuartstories.com/stories/ruffino.html

http://www.amateurgourmet.com/2006/12/some_eat_like_a.html

!!

In some places, pigs are used to search for truffles. They love to eat them so they are used to root them out of the groung.

The phrase "like a pig going for truffles" is an idiom that represents persistence and single-minded determination. It is often used to describe someone who is intensely focused on a particular goal or task and pursues it with unwavering determination, just like a pig with its deep-rooted instinct for finding truffles.

If you ever come across an unfamiliar phrase like this and want to understand its meaning, here are a couple of methods to help you find out:

1. Context: Start by analyzing the context in which the phrase is used. By examining the surrounding words or sentences, you may be able to gather clues about the intended meaning. In this case, if the phrase is used to describe someone's behavior, it suggests that persistence is likely the intended interpretation.

2. Research: Conduct a quick internet search or consult a reliable dictionary or idiom database. Many online resources provide definitions and explanations for commonly used idioms. Simply enter the phrase into a search engine or visit a trusted language-related website to find out its meaning.

Remember, understanding idioms can broaden your language comprehension and help you communicate more effectively.