First, we all need to understand that the Low Country Boil has multiple names. The real name is Frogmore Crab Boil or Frogmore Stew. I grew up in Frogmore (on St. Helena Island, SC) and we ate it all the time. The Yankees have moved in and change the name of the town to St. Helena; however, for those of us in the know it will always be Frogmore!
As you get further away (geographically) from Frogmore the name becomes Beaufort Stew. Once you get out of SC the name seems to become Low Country Stew, Low Country Boil, or Low Country Supper. If you want to impress your friends then call it by it's real name!
The ingredients are shrimp, crab (seasonal), new potatoes, corn, sausage, and Old Bay Seasoning.
Here is a simple (yet accurate) recipe:
http://allrecipes.com/Recipe/Frogmore-Stew/Detail.aspx
and another:
http://dining.discoversouthcarolina....more-stew.aspx