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Choosing the right potatoes is one of the most important factors for obtaining golden fries, crispy on the outside and soft on the inside. Not all varieties react the same way when cooked in oil: some retain too much water, others flake easily, while the best ones form a dry crust and maintain a soft center.
Yellow-fleshed potatoes can offer good results, especially when they have a firm texture and a medium-high starch content. However, flesh color isn't the only factor to consider. For truly crispy frying, floury, ripe, and starchy potatoes are generally preferable, capable of losing moisture without becoming mushy or greasy.
The characteristics of the ideal potato
A good potato for frying should contain a relatively high amount of starch and a moderate amount of water. During cooking, the moisture on the surface evaporates and allows the crust to form, while the starch helps make the inside soft and light.
Very watery potatoes, on the other hand, can result in less crispy fries. Water temporarily lowers the oil temperature and slows browning, allowing them to sit longer in the fryer or pan. The result can be a pale, soft, and greasy fries.
Varieties that are too firm and low in starch hold their shape well, but don't always develop the soft interior typical of French fries. They're often better suited for salads, steaming, or dishes where the pieces must remain whole.
Yellow-fleshed potatoes
Yellow-fleshed potatoes are widespread and readily available. Their color comes from the natural presence of pigments and does not automatically determine their starch content. Within this category, there are firmer varieties and others that are more floury.
When they have dry flesh and a good starch content, yellow potatoes are suitable for frying. They hold their shape, develop an inviting color, and offer a full-bodied flavor. Waxy varieties, on the other hand, may remain slightly firm even after cooking and produce a less crumbly crust.
When purchasing, it's therefore helpful to look for packaging that specifies the recommended use. The words "for frying," "for baking and frying," or "floury" provide more reliable information than the color of the pulp alone.
White and floury potatoes
White potatoes are often high in starch and have a floury texture. This makes them suitable for French fries, croquettes, gnocchi, and purees.
When fried, the inside becomes soft and dry, while the surface can develop a crispy crust. However, they must be handled with care, as some very floury varieties tend to break more easily, especially when sliced thinly or stirred too vigorously.
To limit this inconvenience, it is important to obtain evenly sized sticks and not cook them all at once in a pan that is too small.
Are new or old potatoes better?
New potatoes are harvested before they're fully ripe. They have a thin skin, moist flesh, and generally a lower starch content. They're delicious roasted or cooked whole, but they're not always the best choice for making classic French fries.
Riper potatoes, when properly stored, contain less water and are generally better suited to frying. Their dry flesh promotes even browning and a softer internal structure.
This doesn't mean new potatoes can't be fried. They can offer excellent results in specific preparations, such as peeled and cooked in wedges. For thin, crispy sticks, however, it's best to choose mature, floury potatoes.
Why put potatoes in water?
After peeling and cutting them, it's a good idea to soak the potatoes in cold water for at least thirty minutes. The water removes some of the surface starch, preventing the potatoes from sticking together and promoting a more even crust.
For even better results, they can be soaked for an hour or two, changing the water when it becomes very cloudy. Before frying, they should be drained and dried thoroughly.
This step is crucial: water coming into contact with hot oil will cause splashes and lower the temperature. The sticks should then be patted dry with paper towels or a clean dishcloth until completely dry.
The cut must be regular
Different-sized chips cook at different times. Thinner chips are at risk of burning, while thicker chips are still raw inside. For this reason, it's important to cut them into uniform sticks.
A thickness of about one centimeter allows for classic fries, with a crispy surface and a soft center. For a thinner, crispier version, you can reduce the size, paying more attention to temperature and timing.
Double frying
Double frying is one of the most effective methods for achieving a good texture. The first cooking is done at a moderate temperature, approximately 150-160°C. During this stage, the inside softens without browning the surface too much.
The fries are then drained and left to rest for a few minutes. The second frying takes place at a higher temperature, around 175-180°C, until the surface is golden and crispy.
It's important not to overcrowd the pan or fryer. Too many potatoes lower the oil temperature and can make frying slower and more greasy.
When to add salt
Salt should be added immediately after frying, while the chips are still hot. This way, it adheres better to the surface.
Salting potatoes too early can draw water from the flesh and make it more difficult to achieve a dry crust. After draining, it's best to transfer them to paper towels only long enough to remove excess oil, without leaving them covered or huddled together, as the steam would soften them.
In conclusion
To make crispy French fries, it's best to choose mature, floury potatoes with a medium-high starch content. Yellow-fleshed potatoes can be excellent, but it's important to make sure they're suitable for frying and not excessively watery.
Soaking them in cold water, carefully drying them, slicing them evenly, and frying them twice complete the result. These steps yield dry, golden fries, crispy on the outside and pleasantly soft on the inside.
