Tortillas. Pitas. Roti. Lahvosh. Few retailers spend much time thinking about these ethnic flatbreads, but if industry observers are correct, they soon will be. We're talking wrap sandwiches, the latest quick-dining trend and one that fast-food restaurants are adapting with a frenzy. These humble sheets of dough with fresh food rolled inside them could help retailers provide a contemporary alternative to the tried, true and tired supermarket sandwich. Or, less optimistically, they might be ...

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