First, He Conquered Paris. Now, a Japanese Chef Wants to Become a Brand.

In cooking, timing is everything. So much so that if the chef Kei Kobayashi spots diners heading to the restroom as he sends a dish out from the kitchen, he stops them. Nature’s call can wait; his culinary offerings should be tasted at peak flavor.

Such imperiousness and exactitude align with what Mr. Kobayashi, the first Japanese chef to earn three Michelin stars for a restaurant in Paris, said he had learned from one of his earliest mentors in France: The chef is king.

“Unless you commit to your worldview to this extent, you won’t be able to be a chef,” Mr. Kobayashi, 46, said during a recent interview in Tokyo.

Having earned his third star — the maximum — for his Restaurant Kei in Paris in 2020, he has now expanded his ambitions back to Japan, where he has opened four restaurants over the past two years.

The goal, Mr. Kobayashi said, is to become a brand. In that sense he seems to be emulating Alain Ducasse, at whose now-closed Paris restaurant, Plaza Athénée, Mr. Kobayashi worked before opening his own in 2011.