Store-bought salt and vinegar chips deliver a sharp, mouth-puckering tang that’s hard to resist. Making them at home lets you control the crispness and the intensity of that vinegar kick.
With a simple soak and a clever seasoning trick, you can fry up a batch that rivals anything from a bag.
Why This Works
- Soaking slices in a vinegar solution allows the acid to penetrate the potato, creating a tangy background flavor that survives frying.
- Thoroughly drying the soaked slices prevents oil splatter and ensures chips fry up crisp, not steamed.
- Frying at 350°F [177°C] drives off moisture quickly, forming a light, crunchy texture without burning.
- Homemade vinegar salt (fine salt mixed with a splash of vinegar and dried) delivers a concentrated, sharp vinegar hit that sticks to the hot chips’ surface.
- Seasoning immediately after frying while the chips are still warm helps the vinegar salt adhere and fully melt into the surface.
What You Need
- Mandoline or sharp knife
- Large bowl
- Paper towels or clean kitchen towels
- Heavy-bottomed pot
- Clip-on deep-fry thermometer
- Slotted spoon or spider strainer
- Baking sheet
- Wire rack
- Small plate
Ingredients
- 1 1/2 lb [680 g] russet potatoes, scrubbed
- 1 cup [240 ml] plus 2 teaspoons white vinegar
- 2 cups [480 ml] cold water
- 1 tablespoon fine sea salt
- about 4 cups [960 ml] neutral oil, such as vegetable or peanut oil, for frying
Instructions
- Slice the potatoes. Using a mandoline or a very sharp knife, slice potatoes as thin as possible, about 1/16 inch [1.5 mm] thick. No need to peel. Uniform slices are key for even frying.
- Soak in vinegar water. In a large bowl, combine 1 cup [240 ml] white vinegar and 2 cups [480 ml] cold water. Add potato slices, gently stir to separate, and let soak for 30 minutes. This infuses tang and removes surface starch.
- Make the vinegar salt. While the potatoes are soaking, mix 1 tablespoon fine sea salt with 2 teaspoons white vinegar on a small plate. Spread into a thin, even layer and let air-dry for about 15 to 20 minutes, or until the salt feels completely dry and crumbly. Crush any clumps with the back of a spoon.
- Drain and dry thoroughly. Drain the slices, rinse briefly under cold water, then spread in a single layer on clean kitchen towels. Pat completely dry with more towels. Any remaining moisture will cause oil to splatter and chips to steam instead of fry.
- Heat the oil. Pour oil into a heavy pot to a depth of 2 inches [5 cm]. Clip a deep-fry thermometer to the side and heat over medium-high until the oil reaches 350°F [177°C]. Keep a lid nearby and never leave hot oil unattended.
- Fry in small batches. Carefully add a small handful of dried potato slices to the hot oil. Fry, stirring gently with a slotted spoon, for 2 to 3 minutes, until golden and the vigorous bubbling subsides. Do not overcrowd the pot—fry in several batches.
- Drain and season. Using a spider strainer, transfer chips to a wire rack set over a baking sheet. Immediately transfer the warm chips to a large bowl, sprinkle with the prepared vinegar salt, and toss gently to coat. Repeat with remaining slices, allowing the oil to return to 350°F [177°C] between batches.
- Cool completely. Let the seasoned chips cool completely on the wire rack; they will crisp further as they cool. Ensure they cool to room temperature within 2 hours.
Tips for the Best Results
- Use a mandoline for razor-thin, uniform slices—inconsistent thickness leads to uneven frying.
- Do not soak longer than 1 hour, or the potatoes can become too acidic and mushy.
- Dry the slices obsessively; press between fresh towels and change them if they become damp.
- Fry in small batches to maintain oil temperature. If it drops below 325°F [163°C], chips absorb oil and turn greasy.
- For extra vinegar intensity, double the vinegar salt recipe and season generously.
- If you don’t have a thermometer, test the oil with one chip: it should sizzle immediately and float to the surface within seconds.
Troubleshooting
Chips came out soggy
Slices weren’t dried enough or the oil was too cool. Pat slices bone-dry before frying and keep oil at a steady 350°F [177°C]. If they soften after cooling, re-crisp in a 300°F [150°C] oven for 5 minutes.
Chips taste bland
The soak may have been too short or the vinegar salt not evenly distributed. Soak at least 30 minutes and toss chips while warm so the seasoning adheres well.
Chips are browning too fast or burning
Oil is too hot; reduce heat and wait for the temperature to return to 350°F [177°C]. Dark brown chips can taste bitter.
Vinegar salt is clumpy and won’t sprinkle
The mixture was too wet. Spread it thinner and let it dry longer. You can also place the plate in a 200°F [95°C] oven for 5 minutes to speed drying, then crush.
Storing and Re-Crisping
Cool chips completely to room temperature within 2 hours of frying. Place in an airtight container at room temperature for up to 3 days. Do not refrigerate. To re-crisp, spread on a baking sheet and warm in a 300°F [150°C] oven for 5 minutes, then let cool.
Variations to Try
- Malt vinegar chips: Use malt vinegar instead of white vinegar for a deeper, malted tang.
- Spicy salt and vinegar: Add a pinch of cayenne pepper or smoked paprika to the vinegar salt.
- Herb vinegar chips: Mix dried dill, rosemary, or chives into the vinegar salt.
- Air fryer version: After soaking and drying, lightly spray slices with oil and air fry at 375°F [190°C] for 8–10 minutes, shaking halfway, then season.
- Baked version: Arrange dried slices on lightly oiled baking sheets, bake at 400°F [200°C] for 15–20 minutes, flipping once, until golden and crisp.
Frequently Asked Questions
Can I use apple cider vinegar instead of white vinegar?
Yes, it will give a slightly fruitier tang. Reduce the soak time to 20 minutes to keep the flavor balanced with the potato.
Do I have to peel the potatoes?
No, scrubbed skins add texture and a rustic look. Peel them if you prefer a more classic chip appearance.
How thin should the slices be?
Aim for 1/16 inch [1.5 mm]. If you can see light through the slice, it’s thin enough. A mandoline makes this easy.
Can I reuse the frying oil?
Yes. Let the oil cool completely, then strain through a fine-mesh sieve or cheesecloth into a sealed container. Store in a cool, dark place and use within a month. Discard if it smells off.
Why did my chips turn out greasy?
The oil temperature likely dropped below 325°F [163°C] during frying. Fry in small batches and let the oil reheat between rounds.
Can I make the vinegar salt ahead of time?
Absolutely. Prepare a larger batch, dry it completely, and store in an airtight jar. It keeps for weeks and is great on popcorn or roasted vegetables.