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Separate the oysters from the shells and place them in a large bowl, set the bottom shells aside for later use.
                         
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Marinate the oysters with lemon juice and black pepper for about 10 minutes.
                         
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Mix the potato starch, flour, salad oil, water, egg, baking soda, baking powder and salt to create a mixture. Allow it to rest for 10 minutes. 
                         
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Place all the oysters in the mixture and mix thoroughly, then deep fry one dozen of oysters in 400°F oil and place them back on the shells.
                         
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For the second dozen of oysters, roll them in bread crumbs, deep fry them and place them back on the shells.
                         
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For the dipping sauce, simply mix all the ingredients together and serve with the fried oysters.