I love eating at 503 sushi and have never gotten sick! It’s a lot of fun to go to with friends and feel relatively safe ordering sushi. I haven’t asked about whether they have specific allergy procedures, but I always make a note about being celiac and to please change their gloves while preparing my meal when I order. I also ask for gf tamari sauce!
— Somewhat
— Gluten-free items are marked on the main menu
— Some
— Excellent