Duplex Diner serves classic American comfort food in Washington, DC, providing a nostalgic dining experience with hearty portions and familiar favorites. They are known for their neighborhood atmosphere and traditional recipes.
Operator computes a Health score every night at 2 am HST. It is the one number that tells you if this shop is winning, losing, or steady. Here is how Duplex Diner broke down on Apr 24, 2026.
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