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Is it necessary to pierce the potato with a fork before baking?

Is it necessary to pierce the potato with a fork before baking?
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Can you eat cooked potatoes after being refrigerated?

Can you eat cooked potatoes after being refrigerated?
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Why do potatoes turn black?

Why do potatoes turn black?
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Are you always supposed to puncture a potato with a fork before baking?

Are you always supposed to puncturea potato with a fork before baking?
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What is the best way for three people using standard ovens to bake 300 potatoes in advance for a potato bar and keep them hot until serving?

I have a big event and we are having a potato bar. The event begins at 6PM and the dinner begins at 7. We are needing to bake 300 potatoes in advance for the event. There are three of us that will bake the potatoes. None of us has any fancy ovens - just regular ones. What is your suggestion for getting the potatoes done on time and for keeping them hot for the event?
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Why are our fries turning dark blue/black before service when we blanch them at 180°C after soaking them in water for 1–4 days, and how can we prevent it?

In our kitchen, we blanch our fries in the fryer using the oil blanching method. Our fries have been cut and placed in a bucket of water, fully submerging them, where they sit in the walk-in for anywhere from 1-4 days. We pull the buckets, dump the fries into a large strainer and let sit. Once dry, we fill each basket with the fries and drop each basket for 45 seconds. Fryer is at 180⁰C. We let the baskets hang for 15 mins to allow the oil to drop off as much as possible. The fries are put onto a sheet tray and put in the walk-in to cool before panning them up in a large container, wrapped tight or with a lid. 9 times out of 10 our fries start to turn dark blue/black before the dinner service is over. Any suggestions?
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Why are my russet potatoes turning black after blanching and freezing them?

In our kitchen we have been successfully producing frozen potatoes. We blanch and then freeze russet potatoes, however after storing them in the freezer they are turning black. We follow all the necessary steps, we have done research and even altered our steps to prevent the browning, but we froze over 50 pounds of red and russet potatoes and the majority of them turned brown. We don't add any vinegar or additives to the potatoes as we are trying to keep them as organic as possible. What are we missing?
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I wanted to make long, flat fries, similar to how they make sandwich stuffers out of pickles. What would be the best cooking method?

I wanted to make long, flat fries, similar to how they make sandwich stuffers out of pickles. What would be the best cooking method?
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Why would I want to rinse excess starch off my potatoes before air frying/frying?

Why would I want to rinse excess starch off my potatoes before air frying/frying?
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How to bake a potato in the microwave?

How to bake a potato in the microwave?
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