What are wafer cookies? What's the difference between wafer biscuits and ordinary biscuits?

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Difference:

Wafer biscuits generally use millet flour or glutinous rice flour as the main raw material, which has higher nutritional value and rich nutritional components than refined white flour. In order to make ordinary biscuits more crisp, the raw materials used are mostly low-gluten flour, that is, wheat flour with less protein content. In addition, the sugar and oil content in biscuits is relatively high. Therefore, biscuits are characterized by high sugar, high oil and low protein, and wafer biscuits are superior in nutritional value. Wafer biscuits have less sugar and less oil, so it's boring to eat alone, so there must be a sandwich or a layer of chocolate, while ordinary biscuits can have no sandwich or chocolate.