A simple three-second shake test can determine whether a bottle of soy sauce is high quality, according to a food enthusiast on TikTok. Paul, the creator of the viral video, demonstrated the method by vigorously shaking a bottle of soy sauce and observing the resulting bubbles.
“If bubbles form and linger, that's a good sign. It indicates more soy beans and excellent fermentation,” Paul explained. He added that no foam or bubbles that disappear quickly suggest shortcuts in production, such as watering down or rushed fermentation.
Paul recommended Kikkoman soy sauce as a reliable choice. The trick has garnered widespread approval, with viewers praising the tip. One commenter noted, “If it's not Kikkoman, I keep browsing. Great tip though!” Another suggested checking the ingredients list for only soybeans, wheat, water, and salt, avoiding caramel colouring and taste enhancers.
Soy sauce, originally from China, reached England via Japan in the 17th century and is now a kitchen staple in Britain. The lighter variety enhances taste, while the darker version adds colour to dishes. The shake test offers a quick way to navigate the supermarket aisle.



