Geranium, the three-Michelin-starred restaurant of 2011 Bocuse d'Or winner Rasmus Kofoed, has been fined for hygiene breaches by Denmark's food safety authority.
The restaurant, which is in Copenhagen, has been ordered to pay £2,300 for storing fresh shellfish in temperatures that Danish Food Administration inspectors said were too warm.
They awarded the restaurant the lowest grade in its four-tier rating system after it also reported that two walk-in coolers also had "black, green and white splotches growing on the underside of shelves and on packaged pickled garlic".
Kofoed told Danish news agency Ritzau: "I do not agree with what is written. I believe that it is greatly exaggerated but I admit that there are some parts of the process where perhaps we have been a bit unattentive."
The restaurant had been using a computerised system to monitor food temperatures incorrectly, but fish and shellfish were always stored on ice, he added.