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Prepping sweet potatoes ahead of time

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I have to go to multiple thanksgiving dinners Thursday and the last one I have to go to, I need to bring sweet potatoes to. When I make sweet potatoes, I peel them, slice them into 1/4 inch slices and fry them in butter and garlic and a little sugar. The hardest and most time consuming part of this dish is prepping the sweet potatoes...peeling and slicing them. I was wondering if I could do this ahead of time....like the night before or the morning of, but I have had sweet potatoes brown slightly in the past if I let them sit too long. I was wondering if there was a good way to keep them from browning. I thought of using lemon juice like with apples, but for this dish, that would change the flavor too much. Other ideas?

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  1. I leave mine in water and they don't brown. I've only tried it for a few hours so I don't know if they would get waterlogged overnight.

    1. NO NEED to do this. can be prep'd DAYS in advance, and reheated , covered, over simmering water until hot.

      1. I'm making a sweet potato recipe this year from Gourmet that involves roasting the potatoes in bacon grease. According to that recipe I can cut the sweet potatoes and toss in the bacon grease and leave overnight - perhaps you could cut and toss in melted butter without much problem?

        1. Thanks guys....I think I will try the cutting them and mixing them in melted butter over night!