Idaho Potatoes
"Idaho potato" is a protected trademark, not a botanical variety. It refers to potatoes, almost always the Russet Burbank type, grown within the state of Idaho, where volcanic soil, high elevation, and cold nights produce a potato with an unusually high starch content and low moisture. That starch-to-moisture ratio is what gives them their dry, fluffy interior and thick, netted brown skin, the qualities that made them the standard baking and frying potato in the U.S.
Varieties
Nearly all Idaho potatoes are the Russet Burbank variety, though some Idaho growers also raise Russet Norkotah. The "Idaho" name refers strictly to geography and is legally protected, a russet potato grown in Washington or Colorado can be the same variety but cannot be labeled Idaho.
Buying tips
Choose potatoes that feel heavy for their size with firm, dry skin. Avoid any with green patches (a sign of light exposure and solanine buildup), soft spots, or sprouted eyes. Genuine Idaho potatoes sold in stores usually carry a "Grown in Idaho" seal or sticker.
Substitutes
Russet potatoes grown outside Idaho — 1:1 by weight
Same variety (Russet Burbank or similar), just grown elsewhere. Slightly higher moisture content, so baked texture is a bit less fluffy.
Yukon Gold potatoes — 1:1 by weight
Lower starch and waxier texture. Works for mashing and roasting but won't bake up as dry and fluffy.
King Edward potatoes — 1:1 by weight
Common in the UK; a high-starch potato with a similar dry, floury texture, good for baking and roasting.
Maris Piper potatoes — 1:1 by weight
Another UK high-starch potato, widely used for chips and baking; a close textural match.
Storage
Keep in a cool, dark, well-ventilated spot, ideally 45-55°F, such as a pantry or root cellar. Never refrigerate, cold temperatures convert the starch to sugar and give the potato a sweet taste and darker color when cooked. Stored properly, whole raw potatoes last 3-5 weeks. Keep them away from onions, which release gases that speed sprouting.
How to use
Best for baking whole, French fries, hash browns, and mashed potatoes where a dry, fluffy texture is wanted. Less ideal for potato salad or gratins, where a waxier potato holds its shape better after boiling.
What it pairs with
Classic partners are butter, sour cream, cheddar, bacon, and chives for a baked potato, or olive oil, garlic, and rosemary for roasting. Their neutral flavor also makes them a good base for stronger toppings like chili or curry.
Nutrition
A medium Idaho potato with skin has around 160 calories, 4 grams of protein, and more potassium than a banana. Most of the fiber and a large share of the vitamin C sit in or just under the skin, so leaving it on preserves more nutrients.
FAQ
Is an Idaho potato a specific variety or just a place of origin?
It's primarily a geographic designation. Idaho potatoes are almost always the Russet Burbank variety grown within Idaho's borders; the name is trademarked and can't legally be used for potatoes grown elsewhere.
Can I use a regular russet potato instead of an Idaho potato?
Yes, in a 1:1 swap. The variety is usually the same; the main difference is slightly higher moisture in potatoes grown outside Idaho's specific soil and climate, which makes baked results a touch less dry and fluffy.
Why do Idaho potatoes bake up fluffier than other potatoes?
Their high starch and low moisture content means less water needs to evaporate during baking, so the interior cells separate into a light, dry texture instead of staying dense and wet.
Should Idaho potatoes be peeled before cooking?
Not necessarily. The skin holds fiber and nutrients and crisps well in the oven; for smooth mashed potatoes, though, peeling gives a more uniform texture.
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