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Can I eat week old potatoes that have been cooked and refrigerated?

I baked several potatoes last week and put them in the fridge in individual containers. Would they still be ok to eat? I baked them using a rack that has a sharp tab that pierces the potato and holds it in place so there is a small cut in them. They are stored plain with no butter, sour cream, etc. The skin is dry and loose but the inside looks and smells fine. I have heard bad things about foil wrapped potatoes and wondered if the Tupperware containers would be considered a low oxygen environment?
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Any quick ideas for saving money by starring the potato?

Any quick ideas how I can save money by giving the potatoes starring roles at dinner time?
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What are some lasagna recipes that use potatoes instead of pasta?

I just read that a chef made lasagna using potatoes instead of pasta, do you have any examples that I might be able to make as a unique appetizer on my menu?
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Can I Use Soft Potatoes

Can I use potatoes that are too old and are a little soft?
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Knocking the Protein Ounces off the Center of the Plate When Protein Prices Are Up

I am told that the price of beef is going to remain high for several months, right up to 2015 because last year’s drought forced a reduction in herds. Same thing seems to be happening with pork and chicken costs, and even shrimp is in a down cycle for availability.  I don't want to scare customers away with higher entree prices or visually smaller cuts of meat on the plate, so what can I do?
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Perfect Fresh-cut French Fries

I love the choice we made several years ago to serve fresh-cut Idaho fries, but I’d like to know how we can make them more consistent?  It seems like we are getting some batches that fry up perfectly and the next batch is dark.
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Reheating Mashed Potatoes for a Large Group

We need to make mashed potatoes for about 120 people for a church meal. We would like to do this ahead of time. What is the best way to reheat our mashed potatoes so that we don't lose the quality of our dish?
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What Happened to my Idaho Potatoes?

I am Canadian and I usually get potatoes from PEI. My girlfriend who is American brought me a bag of Idaho white potatoes and I mashed them. I washed and peeled them and cut them in half and boiled them for what took about 50 minutes! In the last 5 minutes, they went mash all right. They absorbed all the water and turned out water mash potatoes, I barely had to mash them! Is it that Idaho potatoes don't mash well or because they were white potatoes?
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Unbelievable Twice-Baked Potatoes

I want to serve twice stuffed potatoes on my menu and create a side box with multiple choices. Besides a basic twice-baked potato stuffed with cheese and sour cream, what else can I do to attract customers to try this section?
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When protein prices are up, think sides

I’ve heard that the price of beef is going to remain high until 2015 because last year’s drought forced a reduction in herds. The same thing seems to be happening with pork and chicken costs per pound and even shrimp is in a down cycle for availability.  While I don't want to scare customers away with higher entree prices or visually smaller cuts of meat on the plate, what can I do to reduce my costs?
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