@Torgr01
Kept me waiting huh. I posted that comment 2 months ago. And yeah that was a mistake on my part, I could have easily have done a cursory google search that anyone could do to get my answer.
For the comic, my opinion is still the same. I was complaining about the simplicity and the relative overuse of mayo in isekai as the crutch for the protagonist's intellect, and the general use of layman's logic to improve simple shit. Like using dead things to fertilise soil, I remember reading the novel
Seirei Gensouki where the main character proposed burying dead leaves near the crops and it was apparently some revelation that dead things enrich soil. Soy sauce is another condiment that is commonly used in these isekai stories, and it makes me question has nobody ever tried fermenting a common bean before? It's not like the main character did some especially complex procedure, created some complex chemical, or invented some machine new to the era, no the author just lazily did some simple shit that anyone can figure out, just to make their character seem "smart".
The author could have fixed the issue by doing general improvements to already existing culinary and tech things. I remember watching a Sam O'nella academy video about the history of sushi, before it became the food of today. In the past sushi was just a pungent smelling preserved fermented dish, rather than the popular dish of today. Or the author could do something like furnace designs. Humanity haven't been using the same furnace to smelt metals since it was invented, an improved design to the already existing tech could be applied in isekai stories. Steel working went from the Bloomer, Blast Furnace, Bessemer Converter, to the Open Hearth Furnace. The Furnace example was inspired from a video I watched not long ago by Real Engineering. The 42 second mark was where they briefly showcased Furnace designs across the ages.
Sources
Sam O'nella Academy video: https://www.youtube.com/watch?v=N80rYgqb6wo
Real Engineering: https://www.youtube.com/watch?v=6jQ4y0LK1kY&t=0s