Which celebrity chef's endorsement deal with Tefal resulted in over 100 million units sold of a single kitchen product line, making it one of the most successful chef-branded products in history?

Celebrity chef endorsements have dramatically transformed food product marketing over the past decades. From kitchen appliances to specialty ingredients, renowned chefs have helped elevate everyday food items into premium products through their personal brand power. This trivia question explores one of the most financially successful chef endorsements in food industry history. Test your knowledge of how culinary expertise and celebrity status have combined to create food marketing gold!

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Jamie Oliver (with the Tefal Jamie Oliver Professional Series)
Gordon Ramsay (with the Tefal Ingenio Collection)
Raymond Blanc (with the Tefal Ideal Collection)
Jean-Claude Tefal (with the Tefal OptiGrill Series)