For Your Information
The presence of holes in crackers is to prevent air bubbles from interefering with the baking process. The cracker dough contains lots of trapped air bubbles, and when it is heated in the oven, these pockets of air expand. To stop these bubbles from expanding and bursting, a machine called a docker pricks holes in the dough to allow the air to escape. This keeps the crackers flat and crispy, with minimal air bubbles.
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