The internet is best when knowledge is shared openly. This is why this legendary ramen ebook on google docs is still a towering achievement. I think it has been directly responsible for good ramen existing in some places that didn't have good ramen for a very long time
https://docs.google.com/document/d/1qLPoLxek3WLQJDtU6i3300_0nNioqeYXi7vESrtNvjQ/edit?tab=t.0