Common things that I didn’t know how they made it until today: soy sauce . I didn’t know it’s a multi processes fermented soy mixed with water strained multiple times.

it's pretty amusing that i knew the process when i was in 4th grade, in Pekalongan, my school took us to a soy sauce factory and it was pretty cool

My school never had study tour sadly. So something interesting like this never thought when I was a kid