Starchy Potatoes
Dry, fluffy Russet and Idaho varieties prized for creamy mashes, roasting, and frying due to high starch content and open texture
Storage
Store unwashed potatoes in a cool, dark, and well-ventilated pantry or cellar at 45–50°F. Avoid refrigeration — cold converts starch to sugar. Farm-fresh potatoes stored exceptionally well can last close to a year, but if you don't know how long they've already been stored, plan on about a month. Keep away from onions, which release gases that speed sprouting. Discard any with green spots or soft eyes.
Keeps For
Farm-fresh potatoes stored properly in a cool, dark place can keep for months — close to a year in ideal conditions. If you don't know the storage history, plan on about a month.
Flavor Profile
When raw, starchy potatoes have a firm, dry crumb and mild earthy flavor. Roasting caramelizes their edges into crisp, golden crusts, while boiling and mashing yields fluffy, creamy interiors. They also break down readily in soups and chowders, thickening the broth and adding body. Russets excel at light, airy textures when whipped.
How to Prep
Leave skins on small Russets for texture or peel large ones for smoother mash. Trim any green or sprouted eyes and remove blemishes. Cut into uniform chunks to ensure even cooking. Drain thoroughly and return to the hot pot for a minute to let the excess moisture cook off before mashing.
Ways to Cook
- 1 Perfect for classic buttery mashed potatoes or loaded baked potato toppings.
- 2 Roast with rosemary and garlic until crispy for hearty side dish.
- 3 Fry shredded into hash browns or potato pancakes with onions.
- 4 Use in soups and chowders for natural thickening and body.
- 5 Use in place of flour or cornstarch as a binder in most recipes.
Pairs Well With
Good to Know
Starchy potatoes darken quickly if cut and exposed to air; rub with acidulated water or lemon juice to prevent browning. Avoid overcrowding when roasting to ensure crisp edges. Watch for soft spots indicating early spoilage.
Did You Know?
Russet potatoes were developed in the 1870s from the early 'Burbank' variety by Luther Burbank and revolutionized American agriculture with their high yields, leading to Idaho becoming famous for potato production. Now they're the backbone of countless dishes worldwide.
Recipe Inspiration
Common Questions About Starchy Potatoes
What are starchy potatoes?
Starchy potatoes have high starch and low moisture content. Russets and Idaho potatoes are the most common examples. They have dry, fluffy flesh that falls apart when cooked—perfect for mashing, baking, and frying. The opposite is waxy potatoes, which hold their shape.
What's the difference between starchy and waxy potatoes?
Starchy potatoes (russets) are dry and fluffy—they fall apart when cooked, making them ideal for mashing, baking, and soups where you want the potato to break down and thicken the broth. Waxy potatoes (red, new, fingerling) have more moisture and hold their shape—better for potato salads, roasting, and soups where you want distinct chunks. Use starchy for fluffy and thick, waxy for firm.
Are russet potatoes the same as baking potatoes?
Yes—'baking potato' is just a generic term for any large starchy potato suitable for baking, and russets are the most common type. The terms are often used interchangeably in recipes.
What are russet potatoes best for?
Mashed potatoes, baked potatoes, and french fries. Their high starch content creates fluffy mash and crispy fries. They also work well as soup thickeners—they break down and add body. Avoid using them for potato salad where you want pieces to hold their shape.
Do I need to peel russet potatoes?
It depends on what you want from texture, nutrition, and flavor. The skins are tougher but get crispy when fried or roasted, and they carry a lot of the earthy flavor of the potato. For smooth, fluffy mashed potatoes, peel them. For home fries, roasted potatoes, or a more rustic country-style mash, leave them on — you get better flavor and some texture variation. Either way, scrub well first.
Can you freeze russet potatoes?
Not raw—they'll turn dark and mushy when thawed. Cooked starchy potatoes freeze better: mashed potatoes freeze well, as do baked potato halves. Blanch raw chunks briefly if you must freeze them, but the texture will still suffer. Best to store them fresh in a cool, dark place.
Why are my russet potatoes green?
Green color indicates chlorophyll from light exposure, which also means solanine has developed—a bitter compound that's mildly toxic in large amounts. Cut away green areas completely. If just the skin is green, peel deeply. If green goes into the flesh, discard the potato.
Why do my potatoes taste sweet?
First, make sure you actually have regular potatoes — sweet potatoes are a different plant entirely. They can be used in similar applications but taste completely different. If you do have regular potatoes, sweetness is usually a sign of freshness and is genuinely prized by food aficionados. If you'd rather have a more starchy, neutral potato, leave them for a few weeks — the sugars will gradually convert back to starch. This is why grocery store potatoes are rarely sweet; by the time they reach you, that conversion is long done.
How long do russet potatoes last?
Four to six weeks in a cool (45-50°F), dark place with good ventilation. Keep them away from onions, which release gases that speed sprouting. Don't refrigerate—cold converts starch to sugar. Check regularly and remove any sprouting or soft potatoes to protect the rest.
Why do my potatoes turn black after cooking?
This after-cooking darkening is caused by iron reacting with chlorogenic acid in the potato. It's harmless but unappealing. Cookware matters too — reactive metals like cast iron and aluminum can accelerate the reaction; stainless steel is less problematic. Prevent it by not overcooking, adding a splash of acid (lemon juice or vinegar) to your cooking water, or serving promptly. Some potato varieties are more prone to this.
How long do you boil russet potatoes?
For mashed potatoes, boil large chunks 15–20 minutes, whole small potatoes 20–25 minutes. They're done when a fork slides in with no resistance. Start in cold salted water and bring to a boil together—this helps them cook more evenly. Drain well and let them steam-dry in the pot before mashing.
Can you microwave a russet potato?
Yes — it works well and takes only 5–7 minutes per potato. Pierce the skin several times with a fork — this is important, not optional; steam builds up inside and an unvented potato can explode. Rub with oil and salt if you want, and microwave on high, flipping halfway through. The skin won't crisp up on its own, but you can finish it in the air fryer or under the broiler for a few minutes if you want that. Let it rest a minute before handling — it will be extremely hot coming out.
Can you cook russet potatoes in an air fryer?
Yes, and they come out great. For baked potatoes, 400°F for 40–45 minutes gives you crispy skin — pierce first, same as the oven. For fries or wedges, cut them, toss with oil and seasoning, and cook at 400°F for 20–25 minutes, shaking halfway.
Should you soak potatoes before frying or roasting?
Soaking cut potatoes in cold water for 30 minutes to an hour draws out surface starch, which helps them crisp up better when fried or roasted. It's worth doing for fries and home fries. For roasted wedges, you can skip it if you're in a hurry — just make sure they're dry before they hit the oil. Soaking in salted water has an added benefit — it helps prevent oxidation, which can turn cut potatoes brown. This is especially worth doing if you're prepping large batches at once.
Should you boil potatoes before roasting or air frying?
A quick parboil (5–7 minutes, not fully cooked) before roasting gives you fluffier insides and crispier outsides — the classic Sunday roast technique. For air frying, you can skip parboiling and still get good results as long as the pieces are uniform. Parboiling is also a good way to get ahead on prep — if you want baked or roasted potatoes throughout the week, boil them in advance and you'll cut your cooking time way down each night.
Can you eat potatoes that have sprouted?
Yes, with some trimming. Cut the sprouts off completely along with a bit of the surrounding flesh — sprouts contain solanine, a mildly bitter compound. Some wrinkling is fine; it just means the potato has lost some moisture. You can soak them in water to help rehydrate them a bit, though don't expect miracles. A slimy, hollow-feeling potato that's mostly sprout isn't worth the effort — toss it.
Can you peel potatoes ahead of time?
Yes — peel and submerge them in cold water, then refrigerate. They'll keep for up to 24 hours without browning. A splash of lemon juice or white vinegar in the water helps slow oxidation further; salt helps too, though less dramatically. Change the water if you're going beyond a few hours. Drain and pat dry before cooking. This is handy for Thanksgiving prep when you're juggling multiple dishes.
Russet vs Yukon Gold for mashed potatoes—which is better?
Both work well, just differently. Russets give you the fluffiest, lightest mash because they're high-starch and low-moisture—they fall apart easily. Yukon Golds are denser and creamier, with a natural buttery flavor, and hold together more. If you want cloud-like mash, use russets. If you want something richer and more substantial, Yukons. Some cooks mix the two.
Can you use russet potatoes for potato salad?
You can absolutely use russets for potato salad — if that's what you have, go for it. They'll be softer and more crumbly than waxy potatoes, but you can work with that. The key with russets: don't overcook them, and let them cool completely before tossing. Working with them warm makes them fall apart fast. Waxy potatoes hold their shape better and are the classic choice, but potato salad police aren't real.
Can you use russet potatoes for scalloped potatoes or gratin?
You can, but waxy or all-purpose potatoes hold their layers better. Russets break down during the long bake and can turn the dish starchy and dense. If using russets, slice them thin (1/8 inch) and don't overcook. Worst case scenario: they get a bit mushy — at which point just mash them, add your toppings, and call them loaded mashed potatoes. Still an amazing time, just a slightly different dish.
Why do russet potatoes sometimes taste like dirt?
Field-fresh potatoes naturally carry soil and have a mild earthy flavor — that's normal and part of what makes them taste like potatoes. But if the earthiness is strong, it might actually be dirt. Russets have rough, textured skin that holds small dirt particles more than smoother varieties. Scrub them thoroughly under running water before cooking, and if the flavor persists, trim any damaged spots where soil may have worked in.
Can you use russet potatoes in soups, stews, and pot roast?
Yes, with a trade-off: russets will break down and thicken the broth, which is great for creamy potato soups and chowders. For stews or pot roast where you want distinct potato chunks, they can get mushy. Add them later in the cooking process to reduce disintegration, or use a waxier potato if intact pieces matter to you.
Why are russet potatoes the best choice for french fries?
A good french fry needs high starch and low moisture — that's what gives you a crispy exterior and fluffy interior. Russets happen to check both boxes, and they're also cheap and very widely grown, which is why most restaurants use them. They're not the only potato that works, and not necessarily the best in every kitchen, but they're the sweet spot for reliability and price.
Are soft russet potatoes still good to eat?
A little give is fine—potatoes naturally soften slightly as they age and lose moisture. If they're still firm enough to hold shape and have no mold, green spots, or bad smell, go ahead and use them. Very wrinkly, hollow-feeling, or slimy potatoes should be tossed. When in doubt, peel one and look at the flesh—if it's firm and white, it's good.
What are the different types of starchy potatoes?
Russets are the most common in the US. Beyond russets, Kennebec and Katahdin are popular all-purpose starchy types. Maris Piper is the British equivalent — widely used for chips and mash in the UK. King Edward is another UK staple. There are hundreds if not thousands of starchy potato varieties worldwide, so don't be afraid to branch out and try something new when you find it.