Purpose of the Circular Dent on Milk Jugs

The circular dent is the unsung background character of your morning. Always there. Quietly doing its job. Never asking for recognition. Just saving your fridge (and floor) from disaster.

white milk jug
Now, I’m not saying you’re going to win a trivia contest with that little nugget, but when you next reach for a jug and catch that little dent in the side, tip it a nod. It’s not some random dimple. It’s engineering genius cast into plastic.

And hey — if you ever find yourself at a party where the conversation dries up, just slip in the words “Did you know the dent in a milk jug can be used to detect spoilage?” Instant attention. You’re welcome.