- One of these could be America's next lunchbox hero
- Served on a crusty roll, the torta is a platform for any number of Mexican favorite ingredients
- Koja Grille brings a Korean touch to the City of Brotherly Love's signature sandwich
- Vietnamese banh mì is a perfect testament to balance
(CNN)If you were one for overstatement, you'd say the successes of the American melting pot are best exemplified in the humble sandwich.