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If you want to make top flat, you need a lid but if you don’t care the shape of the top it’s not needed. I was baking without for longs 😊

Inner texture of the bread can be a bit moist with if it’s baked with a lid.

Here is a photo of toast bread slices I baked without a lid:
2E104612-572C-404B-A526-0382C11F7284.jpeg

Thank you very much for your answer...