To maintain your cast-iron skillet's longevity, it's vital to season it properly. However, using an oil with a low smoke point can lead to burnt food, peeling layers, and uneven heating.
Regardless of how much you invest in your cast iron pans, if you pick an oil that can't handle heat, you'll ruin both your meal and your skillet.
That's why culinary professionals recommend careful oil selection. Here's what to avoid, why it matters for your cookware, and how to choose the right oil for a flawless sear.
Oils to Steer Clear Of When Seasoning Cast Iron
Seasoning cast iron isn't complicated: Clean, oil, wipe off excess, and bake. The quality comes not just from the method (though it's still crucial for maintaining cast iron), but from the oils you choose.
Essentially, avoid oils with a low smoke point and select those with a high smoke point to prevent flaking and burning.
Dylan Clay, a culinary expert, advises against using oils like butter, olive oil, and extra virgin olive oil. Instead, he suggests grapeseed, vegetable, or refined avocado oil.
"I like grapeseed oil [available at Walmart] because it's budget-friendly and neutral in flavor," he explains. This oil works well for everything from pizza to steak.
The term 'smoke point' indicates the temperature at which oil begins to smoke. Each oil has its unique smoke point, and exceeding this can lead to burnt flavors and potentially harmful substances, affecting your health and your goal to create a healthier home with non-toxic cookware.
Choosing a high smoke point oil for seasoning allows for safe baking onto the cast iron's surface, forming a non-stick protective layer without burning.
A suitable high smoke point oil is one that can withstand temperatures of 400°F (200°C) or higher. For instance, refined avocado oil, available at Amazon, boasts a smoke point of around 520°F (271°C), while extra virgin olive oil starts smoking at about 305°F (175°C), which can ruin your pan.
This simple swap won't alter your cleaning routine but will significantly enhance your cooking experience and overall health.
Recommended Products
Choosing the right oil for seasoning is just one element of caring for cast iron. To help you keep your cookware in top shape for years, here are six oils and tools to consider.
Expert recommendation
Pompeian 100% Grapeseed Oil
Highly endorsed by professionals, grapeseed oil has a high smoke point, a neutral taste, and is budget-friendly.
Budget-friendly option
Great Value Vegetable Oil
This versatile cooking oil is perfect for seasoning and low-stick cooking, imparting minimal flavor and is cost-effective for larger uses.
Refined for high heat
Betterbody Foods Refined Avocado Oil
This refined oil offers an even higher smoke point, making it a safe choice for your cookware while avoiding burning or harmful chemicals. Chefs often recommend avocado oil.
Perfect for novices
Lodge Cast Iron Care Kit
If you're new to cast iron cooking, this comprehensive kit is a great starting point for seasoning and maintaining your skillet, including a scraper, scrubber, handle cover, and canola oil spray.
Designed for cast iron
Gymdin 6-Piece Kitchen Utensils Set
These stainless steel tools are perfect for cast iron cooking, ensuring they won't damage the seasoning layer while effortlessly maneuvering food for beautiful plating.
Available in three colors
Le Creuset Mini Oven Mitts, Set of 2
These cotton oven mitts, lined with silicone, are ideal for handling hot cast iron pans, allowing for easy transfer from oven to table.
Meet the Expert

Dylan has over 17 years of experience in smoking, grilling, and dehydrating meats. He established Barbecue FAQ in 2019 to assist home cooks in mastering BBQ.
With summer on the horizon, you might not want to spend hours by a hot stove. Luckily, there are some cool uses for cast iron cookware this summer, perfect for entertaining without extensive cooking.