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My Idaho® Potatoes Looked Good On The Outside But Turns Out The Inside Was Rotten

I purchased Idaho® potatoes and they looked good but it turns out they were rotten on the inside, why did this happen?
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How To Know You're Buying Idaho® Potatoes

How do I know I'm buying Idaho® potatoes?
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The Difference Between Idaho® Potatoes And Russet

What is the difference between Idaho® potatoes and russets?
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How Do I Leach Out Starch For Making Fries And How Can I Make Them Crispy?

Is ice water more effective than room temperature water for leaching out starch for making fries? Also, do you know what method creates a light and crispy exterior verses one which is hard and leathery? Is it the potato or the process?
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Are My Instant Mashed Potato’s Gluten Free?

I use Trio mashed potatoes without milk, the kids at camp are asking if these are gluten free?
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Why Did My Potato Latkes Turn Black After Storing Them in the Fridge?

I just made a batch of potato latkes and fried them up until crispy brown. They tasted excellent, but we stored them in the refrigerator, wrapped up and continued to eat them for a few days. After the third day, the center on some of the potato pancakes turned black. Can you tell me why or what to do to prevent it? I added lemon to the shredded potatoes while I shredded them to prevent discoloration. I used 12 large Idaho® potatoes, 10 eggs, a half cup of Matzo Meal, a half cup of high gluten flour, a tablespoon of baking powder, salt, pepper and two grated Spanish onions; I fried them in a blended oil. Could the high gluten flour have something to do with it?
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Do all processed potatoes come from Idaho?

I see lots of ads in foodservice magazines for processed potatoes; do they all come from Idaho?
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The perfect baked potato to pair with a steak

What is the perfect baked potato to pair with a steak?
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Ten steps to better homemade Idaho® Potato french fries

Are there some tips on how I cannot screw up the relationship I have with homemade Idaho® French fries? What exactly are the pitfalls I need to avoid to please guests with the best fresh cut French fries?
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How do you cook a baked potato?

What is the correct oven temperature and time to cook a baked potato? I especially would like to know the cooking temperature for russets.
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