Square they say is harder to clean but this cleaned up very easily.

I was using the product for bread dough starter, now that the starter is active and useable I am using it for rising dough. It is easy to see how much the dough has risen because it is see through and the container has measurements on it. The lid fits tight and it is durable. I am happy with my purchase I will likely buy a second for other bread dough I make at the same time.

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