French fried onions have become a beloved American pantry staple, primarily due to their essential role in the holiday classic, green bean casserole. However, their crispy, savory profile makes them a versatile topping for everything from burgers and hot dogs to salads and mashed potatoes. The ingredients required to make this crunchy delight are surprisingly simple and can be broken down into their homemade and commercial counterparts.
The Ingredients for Homemade French Fried Onions
Creating these crispy toppings at home gives you complete control over the flavor and texture. The process generally involves three main components: the onions, the soaking liquid, and the seasoned flour dredge.
- The Onions: Choosing the right onion is the first step. Sweet onion varieties, like Vidalia or Walla Walla, are often recommended for their milder flavor, which becomes even sweeter and more palatable once fried. However, common yellow or white onions also work well, especially when soaked correctly. The key is to slice them uniformly and very thinly to ensure even cooking and maximum crispiness.
- The Soaking Liquid: A buttermilk or milk soak is a crucial step in many recipes, serving a dual purpose. First, the acidic and fatty properties of buttermilk help to mellow the pungent, harsh bite of the raw onion. Second, it gives the flour coating something to adhere to, ensuring a thick, even dredge that fries up beautifully. For a dairy-free option, you can create a homemade "buttermilk" by adding a tablespoon of vinegar or lemon juice to a cup of non-dairy milk.
- The Coating: The crispy exterior comes from a simple seasoned flour mixture. All-purpose flour is the base, but some recipes call for a small amount of cornstarch or baking powder to enhance the texture and bubbliness. Common seasonings added to the flour include salt, black pepper, paprika, and garlic powder. For extra kick, some recipes suggest a pinch of cayenne or Cajun seasoning.
- The Frying Oil: For frying, a neutral-flavored oil with a high smoke point is best to prevent the onions from burning and to avoid any off-flavors. Vegetable oil and canola oil are popular, budget-friendly choices. Peanut oil offers a unique flavor but is not neutral. It's also important to use fresh oil, as previously used oil can absorb and transfer off-flavors and may not yield the best results.
The Ingredients in Store-Bought French Fried Onions
For those who prefer the convenience of a ready-made option, popular brands like French's have a straightforward ingredient list. While the exact proprietary formula may vary slightly, the primary ingredients remain consistent. These products are designed for consistency, shelf-stability, and mass production.
- Onions: The core ingredient is, of course, onions. Many brands use specially sourced, whole yellow globe onions.
- Palm Oil: A frying oil is required, and palm oil is a common choice for its stability and neutral flavor profile during the frying process.
- Wheat Flour: The breading or coating is made with wheat flour, which provides the crispy texture.
- Salt: A key seasoning for flavor.
- Dextrose: A type of sugar that can be added for flavor and to aid in browning.
- Flavor Protectors: In commercial preparations, additional ingredients like TBHQ and Citric Acid are used in propylene glycol to protect the flavor and ensure a long shelf life.
Homemade vs. Store-Bought: A Comparison
| Feature | Homemade French Fried Onions | Store-Bought French Fried Onions | 
|---|---|---|
| Ingredients | Whole onions, buttermilk/milk, all-purpose flour, salt, pepper, paprika, garlic powder, neutral frying oil. Customizable based on preference. | Onions, palm oil, wheat flour, salt, dextrose, TBHQ, citric acid. Standardized formula for mass production. | 
| Flavor | Fresher, more prominent onion flavor. Seasoning can be adjusted for a spicier or milder taste. | Consistent, savory, and slightly sweeter flavor profile due to dextrose. | 
| Texture | Ultra-crispy and light, with a more rustic, delicate coating. Best when eaten fresh. | Uniformly crunchy, with a slightly denser, more uniform breading. Maintained during storage. | 
| Convenience | Requires time and effort for slicing, soaking, dredging, and frying in batches. | Ready to use straight from the package, requiring no preparation. | 
| Shelf Life | Best consumed immediately for peak crispiness, but can be stored in an airtight container for several days. | Long shelf life, designed to be stored in the pantry for extended periods. | 
Creative Flavor Variations and Usage Ideas
For those making their own, or for a creative twist, the basic recipe can be a canvas for new flavors.
- Spicy Kick: Add a dash of cayenne pepper or chili powder to the flour mixture for some heat.
- Cajun Style: Blend Cajun seasoning into the flour for a zesty, flavorful profile.
- Smoky Flavor: Use smoked paprika instead of regular paprika for a deeper, smoky taste.
- Herbed Crunch: Incorporate dried herbs like thyme or oregano into the flour mixture to complement savory dishes.
Beyond green bean casserole, French fried onions are a game-changer for many meals. Sprinkle them over soups, mac & cheese, burgers, or even salads for a welcome texture and flavor contrast. They can also be used as a crunchy coating for chicken or pork chops. The versatility of these crispy onions is limited only by your imagination.
An excellent homemade recipe and additional ideas can be found at Allrecipes.com.
Conclusion
Whether you opt for the simplicity of a store-bought version or the fresh flavor of a homemade batch, the core ingredients in French fried onions are surprisingly basic. For homemade versions, it's all about high-quality onions, a proper milk or buttermilk soak, a well-seasoned flour coating, and a neutral, high-smoke-point oil. Store-bought products streamline this process for convenience while delivering a consistently crunchy and savory product thanks to their use of standard ingredients and preservatives. Ultimately, both methods deliver that signature, satisfying crunch that has made this topping a long-standing favorite.