Why do people add an ice cube to the pan when frying potatoes?
Various culinary techniques are used to achieve crispy on the outside and soft on the inside of homemade french fries. One of these is using cold water or ice during the preparation process. However, adding ice directly to hot oil can cause significant oil splattering due to the water suddenly turning into steam.
When potatoes are cut, a certain amount of starch naturally accumulates on the surface. This starch can cause the potatoes to stick together during frying and prevent them from becoming crispy enough. Soaking them in cold water and ice helps remove excess starch from the surface. This allows the outer surface of the potatoes to become drier and crispier during frying. The goal of this method is not to throw the ice into hot oil, but to soak the potatoes in a container of cold water and ice.
When potatoes are left to sit in the cold, the starch on their surface decreases, allowing for a smoother crust during frying. This difference is especially noticeable with thinly or medium-thick sliced potatoes. After being soaked in cold water, the potatoes should be thoroughly dried with paper towels or a clean kitchen cloth. Leaving water on the surface can cause splattering when in contact with hot oil, resulting in softer potatoes. Therefore, for crispness, soaking in cold water and then completely drying are more important than freezing.
While some recipes may mention using ice during frying, simply dropping ice directly into hot oil is not a safe method. Ice melts and turns into water, and when it comes into contact with hot oil, it quickly evaporates, causing the oil to splatter. This can lead to serious burns and the risk of oil fires in the kitchen. Instead of changing the oil temperature with ice to ensure better frying of potatoes, it's safer to monitor the temperature with a suitable thermometer. Keeping water and ice away from the oil is a fundamental safety rule, especially in recipes using hot oil.
Using ice alone isn't enough to achieve crispy potatoes. Cutting the potatoes to an even thickness, washing off the starch, and thoroughly drying them greatly influences the result. For an even crispier outcome, some methods involve first cooking the potatoes at a lower temperature and then frying them a second time at a higher temperature. Avoiding over-cooking also helps the potatoes become crispier by preventing a rapid drop in temperature. Therefore, ice should be considered more of a part of the cold water soaking process than a miracle cure on its own.
