One Good Thing By Jillee - Ever wonder why plastic milk jugs have those circle indents on the side? They are there to allow milk to expand while freezing! (I had no
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Amazon.com: ZHIRCEKE Milk Jugs 201 Stainless Steel, Wine Bucket Milk Transport Barrels Oil Bucket Tea Canister with Sealed Silicone Lid and Buckle Lock,48L : Home & Kitchen
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Amazon.com: Mophorn 304 Stainless Steel Milk Can 20 Liter Milk Bucket Wine Pail Bucket 5.25 Gallon Milk Can Tote Jug with Sealed Lid Heavy Duty for Milk and Wine Liquid Storage :
![What is this concave circle on the side of my milk jug? There's only one, there isn't an opposite shape on the other side.. : r/whatisthisthing What is this concave circle on the side of my milk jug? There's only one, there isn't an opposite shape on the other side.. : r/whatisthisthing](https://i.imgur.com/cloCD39.jpg)