
Kopan Sushi and Ramen
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A downtown Fullerton favorite with thousands of reviews, Kopan is renowned for what many consider Orange County richest tonkotsu ramen: a 16-hour-simmered broth that is exceptionally thick, collagen-rich, and deeply porky. Sushi rolls are equally solid, making it a reliable double-feature destination. The open kitchen and lively dining room create a high-energy atmosphere. Order the tonkotsu ramen with extra chashu.