Im not 100% sure on this but doesnt hurt to ask. They are all pretty nice and the roman is freshly made right in front of you. So im sure they would be fine doing that for you as nothing is pre packaged or pre made so they can add or take away anything you meed.
I don't know how they are with customizing ramen but they do have more plain not-ramen dishes. Chicken teriyaki and pork fried rice; which I've heard are good.
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