We're dropping in at diverse locales this week as we prepare to celebrate the Fourth of July. Southern food historian John Martin Taylor, author of the newly reissued Hoppin' John's Lowcountry Cooking, takes us to South Carolina's coastal plain for boiled peanuts, Pimiento Cheese and Frogmore Stew.

We'll go down east with Jane and Michael Stern for that epitome of summer, boiled Maine lobster right on the beach, then we head west to discover the birthplace of the hamburger. Josh Wesson reports on a delicious, summery, bargain white wine; Al Sicherman and Lynne taste canned baked beans; and our producers have cooked up a surprise or two.