It's everywhere and nowhere
Love your work, and Clarissa's! Been working on an article about use of Japanese names in food in the West, and also the fetish for Japanese and Korean foods and ferments over Chinese. Metaphor for the West's relationships with these countries, and the success of Japan and Korea at cultural appeasement. Please share your soy sauce knowledge on a bigger platform!
I also pondered about why Japanese names are usually adopted instead of other Asian names. My bias brain thinks it's because Japan got the right PR and exposure with US, who happily consumed their culture while the rest of Asia is overlooked upon (too undeveloped, too communist, etc) or appreciated much later.