Labneh is a strained yogurt used for sandwiches popular in Arab countries.

According to the advertisements and accompanying mini-documentary, the Whopper was the most popular sandwich among the test subjects.

However, it is a popular sandwich with all demographics throughout the Caribbean.

Placed in a hard roll with onions and pickle relish, it was a popular sandwich.

The ads showed the startled reactions of customers that Burger King would discontinue selling its most popular sandwich.

For the past 10 years, America's most popular sandwich has been ham with mayonnaise.

A popular sandwich is peanut butter and jam (jelly).

This still today remains one of the Halo Burger's most popular sandwiches, especially with olives.

Find out more about popular sandwiches.

Barros Jarpa is a popular sandwich that includes ham and melted cheese.