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The bicarb in pan cake batter releases CO2 gas while the pan cake cooks , making it light and airy. If you let the batter sit, some of the CO2 may be leased before you cook it and your pan cakes may be heavier. Besides the CO2 ,you introduce air in the batter when you beat or stir it and this too helps make the pan cakes lighter and will leave the batter if it sits.

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14y ago

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