咸蛋一般用黑色灰泥包裹,购买时可将部分灰泥剥去,对着灯光观察。如蛋白透明红亮而清晰、蛋黄无扩散或偏倚一旁,转动时蛋白流动同时带动蛋黄的,是优质咸蛋。
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咸蛋一般用黑色灰泥包裹,购买时可将部分灰泥剥去,对着灯光观察。如蛋白透明红亮而清晰、蛋黄无扩散或偏倚一旁,转动时蛋白流动同时带动蛋黄的,是优质咸蛋。