#vegan cross contamination street food

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Close-up of a vendor using a separate clean knife over dedicated tofu and mushroom trays, filling a Vietnamese baguette sandwich split lengthwise at a spotless counter, cool daylight.

How to Tell a Banh Mi Is Truly Vegan: Red Flags at the Stall

Hidden fish sauce, egg mayo, pork floss and shared knives: the red flags and green flags that show whether a banh mi in Vietnam is truly vegan.

11/10/2026 8 min read