These kettle-style potato chips are cooked without a single grain of salt, letting the pure potato flavor and crispy texture shine through. The two-step cooking method—frying at a moderate temperature first, then a quick high-heat finish—produces the sturdy, crunchy chips you expect from a kettle batch, with no added sodium. It’s a simple, satisfying snack that works for low-sodium diets or anyone who prefers to control their own seasoning.
Ingredients
- 4 medium russet potatoes (about 2 lb / 900 g)
- 4 cups (960 ml) peanut or vegetable oil, for frying
- Ice water, for soaking
Instructions
- Scrub the potatoes thoroughly and pat dry. Do not peel—the skin adds texture and helps the chips hold their shape. Using a mandoline or a very sharp knife, slice the potatoes into 1/8-inch (3 mm) thick rounds. Keep the slices uniform so they cook evenly.
- Place the slices in a large bowl and cover with ice water. Let soak for 15 minutes. This removes excess surface starch, which prevents chips from sticking together and helps them crisp up.
- Drain the potatoes and spread them on a clean kitchen towel. Pat very dry—any moisture will cause splattering and can make the chips soggy. Let them air-dry for 5 minutes while you heat the oil.
- In a heavy-bottomed pot or Dutch oven, heat the oil over medium-high heat until it reaches 325°F (163°C). Use a deep-fry thermometer to monitor the temperature.
- Working in batches of about 1 cup (about 8 oz / 225 g) of slices, carefully add the potatoes to the oil. Fry for 4–5 minutes, stirring occasionally with a slotted spoon, until the chips are lightly golden and the bubbling has slowed. Do not overcrowd—the temperature will drop too much.
- Remove the chips with a slotted spoon and drain on paper towels. Let the oil return to 325°F (163°C) before adding the next batch.
- After all batches are done, increase the oil temperature to 375°F (190°C). Return all the chips to the oil in batches and fry for 30–45 seconds more, until deep golden and very crispy. This second fry gives the classic kettle crunch.
- Drain on fresh paper towels. Serve warm, or cool completely and store as directed below. Do not add salt—the recipe is intentionally salt-free.
Tips
- Use starchy potatoes: Russets are ideal because they are low in moisture and high in starch, yielding crispier chips. Waxy potatoes like red or new potatoes will be denser and less crunchy.
- Keep the oil temperature steady: If the oil is too hot, the outside burns before the inside cooks; too cool, and the chips absorb oil and turn greasy. Use a thermometer and adjust the heat as needed between batches.
- Dry the slices thoroughly: Any water left on the potatoes will cause hot oil to splatter and can result in uneven cooking. Pat them dry with a towel and let them air-dry before frying.
- Do not skip the soak: The ice-water bath removes starch that would make chips stick together and also helps them stay crisp longer. It is a crucial step, not optional.
Serving Suggestions
Serve these chips as a snack with a dip like hummus, guacamole, or a yogurt-based ranch. They also make a great side for sandwiches or burgers, adding a salty-free crunch that pairs well with tangy or spicy condiments. For a low-sodium meal, serve alongside a fresh green salad with a lemon vinaigrette.
Variations
- Seasoned Kettle Chips: After frying, toss the warm chips with a pinch of smoked paprika, garlic powder, or onion powder. Add a sprinkle of vinegar powder for a salt-and-vinegar flavor without the salt.
- Sweet Potato Kettle Chips: Substitute sweet potatoes for russets. They cook slightly faster, so reduce the first fry time to 3–4 minutes and watch closely to prevent burning.
- Thicker-Cut Chips: Slice the potatoes to 1/4-inch (6 mm) thick for a heartier, more rustic chip. Increase the first fry time to 6–7 minutes and the second fry to 1 minute.
- Herb-Infused Oil: Add a sprig of rosemary or a few thyme sprigs to the oil while heating. Remove them before frying; the oil will carry a subtle herbal note.
Storage and Reheating
Store cooled chips in an airtight container at room temperature for up to 3 days. They will lose some crispness over time; to refresh, spread them on a baking sheet and warm in a 300°F (150°C) oven for 5–7 minutes. Do not refrigerate, as moisture will make them soggy. For longer storage, freeze in a zip-top bag for up to 2 months; reheat directly from frozen in the oven as above.
Frequently Asked Questions
Can I use olive oil for frying? Yes, but choose a refined olive oil with a high smoke point, not extra-virgin. Peanut oil or vegetable oil are preferred because they are neutral and can withstand high heat without burning.
Why do my chips come out greasy? This usually happens when the oil is not hot enough. If the temperature drops below 300°F (149°C) when you add the potatoes, they will absorb oil. Fry in small batches and allow the oil to return to 325°F (163°C) between batches.
Can I make these in an air fryer? Yes, but the texture will be different—more like baked chips. Toss the soaked and dried slices with a teaspoon of oil, then air-fry at 350°F (177°C) for 12–15 minutes, shaking halfway. They will be less crunchy than deep-fried.
How do I know when the chips are done? The first fry should leave them lightly golden and flexible. After the second fry, they should be deep golden and rigid. They will crisp further as they cool, so do not over-fry to a dark brown.
Can I skip the second fry? Yes, but the chips will be less crunchy and may become chewy as they cool. The second fry is what gives kettle chips their signature hard crunch, so it is worth the extra few minutes.
Is it safe to reuse the frying oil? Yes, if you strain it through a fine-mesh sieve to remove bits, let it cool, and store it in a sealed container in the refrigerator for up to 1 month. Discard it if it smells rancid or becomes foamy when reheated.
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Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes
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