What Do Bay Leaves Actually Do For Your Soup? - Tasting Table
Briefly

Bay leaves, often overlooked in cooking, contribute essential base flavors to various dishes, especially soups and stews. However, their effectiveness depends significantly on freshness; old or stale bay leaves lack aroma and flavor. Home cooks can determine freshness by breaking a leaf and smelling it — a fresh bay leaf should have a pleasant herby scent. Additionally, these leaves have historical roots in ancient Greece and Rome, symbolizing victory and authority, but they should never be consumed whole due to potential choking hazards and lack of flavor when chewed.
Bay leaves, while seemingly lacking flavor due to freshness issues, are essential for building complex base flavors in soups and stews.
To ensure potency, check bay leaves' freshness by breaking one in half for aroma; if there's no scent, it's time for a new jar.
Originating from the Mediterranean, bay leaves have historical significance, once serving as crowns for athletes in ancient Greece and symbolism in Roman culture.
Though not toxic, bay leaves shouldn't be eaten whole as they can pose a choking hazard; they're meant to enhance the dish but should be discarded.
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