Why do so many cooking tutorials use “two spoons of light soy sauce, one spoon of dark soy sauce, and one spoon of oyster sauce”? Is it a universal formula, and can they be combined into one seasoning?

为啥现在很多做饭教程都是「两勺生抽一勺老抽一勺蚝油」？这是什么万能公式吗？能不能把它们也做成一种调料？

A public trend signal observed across 1 source.