The Origin of the Purple Hue
What are purple potato chips made of? The answer lies in the use of actual purple-fleshed potatoes. Unlike regular chips, these snacks use vibrantly colored potatoes, including varieties like Purple Majesty, All Blue, and Purple Peruvian. The pigment responsible for the color is anthocyanin. This antioxidant is also found in blueberries, red cabbage, and eggplants. The anthocyanins remain stable even after cooking, maintaining the chips' unique color. This provides a nutritious alternative to artificially colored snacks.
Production: Commercial vs. Homemade
Whether produced commercially or at home, the process for making purple potato chips is similar to traditional chips. Commercial producers select varieties with stable color. Research from Ohio State University in 2017 evaluated methods to preserve color and phenolic content during processing. Techniques like blanching and soaking in a mild acid (e.g., citric acid) help prevent anthocyanin degradation during frying, resulting in a more vivid final product. At home, a mandoline creates thin slices, while an oven or air fryer offers a baked option that retains nutrients.
Creating Purple Potato Chips at Home
- Preparation: Thoroughly wash the purple potatoes. The skin contains fiber, so leaving it on is an option. Use a mandoline for even slices.
- Rinsing: Soak the sliced potatoes in cold water and rinse until the water runs clear. This removes excess starch, which contributes to a crispier texture. For color preservation, soak in a vinegar solution.
- Drying: Pat the slices dry. Removing moisture is essential for crispiness.
- Seasoning and Cooking: Toss the dried slices with oil and seasonings. Bake in a single layer or use an air fryer.
Comparing Purple Potatoes and Sweet Potatoes
It's important to know the difference: purple potato chips are made from purple potatoes, not purple sweet potatoes. They belong to different plant families, affecting taste and texture.
Purple Potato vs. Purple Sweet Potato Chips
| Characteristic | Purple Potato Chips | Purple Sweet Potato Chips |
|---|---|---|
| Flavor Profile | Earthy, slightly nutty, and savory. | Sweet, similar to orange sweet potatoes but milder. |
| Texture | Denser flesh, resulting in a slightly starchier crunch. | Drier flesh, for extra crispiness. |
| Ingredients | Purple-fleshed potato (Solanum tuberosum). | Purple sweet potato. |
| Nutritional Content | High in anthocyanins, potassium, and vitamin C. | High in anthocyanins, vitamin A (beta-carotene), fiber, and vitamin C. |
The Health Aspects of Purple Chips
Due to their anthocyanin-rich ingredients, purple potato chips are seen as a healthier choice than regular chips. Anthocyanins provide protection against oxidative stress and may reduce inflammation. Some studies link purple potato consumption to improved blood pressure and blood sugar control.
It is important to remember that these chips, whether baked or fried, are still a processed snack. Commercial chips may include extra salt, oils, and seasonings, which add calories and fat. Making them at home lets you control the ingredients for a healthier snack.
Conclusion
In summary, purple potato chips are made using specific purple-fleshed potato varieties. These potatoes give the chips their natural color due to anthocyanins. The production process aims to preserve this pigment, and at-home preparation offers ingredient control. These chips, while potentially offering more antioxidants than conventional chips, are still a processed snack best consumed in moderation. The availability of these distinct varieties of potatoes allows for a colorful and flavorful chip experience that is as natural as it is enjoyable.
