What is the cheapest way to send package to south Korea?

I'm planning to send a package to my friend in korea.
well .. what is cheapest? and can i send some snack? and salsa?

If you live in Korean concentrated area like NY, CA, GA, there are "taek-bae (韮濍鞍)" companies, they send so many packages to Korea by air their rate is really good. If you email me your email I can look up Korean directory for you. (anna2free@yahoo.com)
Next option is USPS.
(By the way, I assumed you live in US since - I live in States^.^)

Any package shipment should not have perishable item. If your chips and salsa is well packed - as if it comes from the store package I mean - most of them will do fine. Since the shipment will be aired, salsa bottle can be poped open, so make sure you put enough protection around. Wrap with plastic many times, and put them in a second container then seal again.

I heard there are certain restrictions with raw food, grains, and beef products, so try to avoid those things. (Cooked food is okay)

The cheapest way to ship something to Korea is by surface mail (boat). This can take 6 to 8 weeks to arrive though.

You can send snacks and salsa as long as you pack it carefully and declare it on the customs form for the inspectors at immigration.