A Practical Buyer's Guide to Cooking Oils

The selection on supermarket shelves or in online shops can be overwhelming: rapeseed oil, sunflower oil, olive oil, plus specialities like sesame or peanut oil. If you just want to buy cooking oil, you often face a confusing variety. Choosing the wrong oil for a hot pan or being baffled by opaque labels are common problems. This not only leads to unsatisfactory cooking results but also to wasted money.

As your Joybuy Product Recommendation Officer, I'll help you understand the key criteria to find the right oil for every purpose and avoid common pitfalls.

The 3 Most Common Mistakes When Buying Cooking Oil

Before we dive into the details, let's look at three common mistakes that often lead to disappointment in the kitchen.

1. Ignoring the smoke point: Many people use expensive, cold-pressed olive oil for high-heat searing. When an oil reaches its smoke point, it begins to smoke, develops an unpleasant taste, and can produce unwanted compounds. Not every oil is suitable for high temperatures.
2. Misunderstanding labels: Terms like "extra virgin," "cold-pressed," or "refined" are not just marketing jargon; they define an oil's character and ideal use. If you don't know the difference, you might buy a flavour-intensive oil for a dish that requires neutrality.
3. The package size is unsuitable: Especially with speciality oils like toasted sesame oil or walnut oil, a large bottle is rarely a good choice. Oils can go rancid over time, particularly after opening. A quantity that is too large often spoils before it can be used up.

What to Look For Before You Buy: 3 Decisive Criteria

To avoid these mistakes, you only need a little basic knowledge about the properties of cooking oils.

1. The Smoke Point: For High-Heat Searing or Cold Dishes?

The smoke point is the temperature at which an oil begins to break down and produce smoke. This is the most important criterion for choosing the right oil for your cooking method.

• High smoke point (above 200°C): Ideal for searing, deep-frying, and baking. This includes refined oils like rapeseed oil, sunflower oil, or special peanut oil for frying. They are neutral in taste and heat-stable. A dedicated frying oil is often a blend of several high-heat vegetable oils.
• Medium smoke point (approx. 180–200°C): Suitable for gentle frying, sautéing, and baking at moderate temperatures. Many refined olive oils fall into this category.
• Low smoke point (below 180°C): These oils are intended for cold dishes. This includes most virgin, cold-pressed oils like flaxseed oil or virgin walnut oil. High-quality extra virgin olive oil should also only be heated very gently to preserve its flavours.

2. The Production Method: Refined vs. Cold-Pressed

The production method has a direct impact on taste, heat resistance, and nutrient profile.

• Refined Oils: These oils are extracted using heat and various purification processes (refining). This makes them very heat-stable, long-lasting, and neutral in taste. They are the workhorses in the kitchen for all applications that require high temperatures and where the oil's own flavour should not be prominent.
• Cold-Pressed (Virgin) Oils: Here, the oilseeds or fruits are pressed purely mechanically and without the application of heat. This preserves the typical flavour of the variety and many of the original nutrients. A cold-pressed oil like extra virgin olive oil is therefore ideal for salads, dressings, and for finishing dishes after cooking. An organic cooking oil is also often cold-pressed to maintain its natural quality.

3. The Intended Use: All-Purpose or Speciality Oil?

Consider what you primarily need the oil for.

• All-Purpose Oils: For daily use in cooking and frying, refined oils like rapeseed or sunflower oil are an economical and practical choice.
• Flavouring Oils: Oils like toasted sesame oil or chilli oil serve as a seasoning. They are used sparingly to give dishes a specific flavour note, usually at the end of the cooking process or for serving.
• Oils for Cold Dishes: Flaxseed oil, pumpkin seed oil, or high-quality olive oil are meant for salads, dips, and smoothies. Their valuable fatty acids and aromas are sensitive to heat.

Top Picks by Cooking Needs

Based on these criteria, we have put together some products for different user profiles.

MATCH FOR: THE BUDGET-CONSCIOUS ALL-ROUNDER

Jeden Tag Pure Rapeseed Oil 1L

Why This Fits Their Persona: Ideal for daily use in the family kitchen. This oil is a versatile helper for almost all cooking applications, from frying schnitzels to dressing a simple salad, without breaking the bank.

How It Avoids the Trap

As a refined oil, it has a high smoke point and a neutral taste. This avoids the mistake of overheating an unsuitable oil. The 1-litre bottle is appropriately sized for regular consumption.

Key Advantage & Pros

Universally applicable for frying, cooking, and baking. Excellent value for money for everyday needs.

MATCH FOR: THE COLD-CUISINE GOURMET

Campo Verde Demeter Organic Extra Virgin Olive Oil 0.5L

Why This Fits Their Persona: For those who value the highest quality, organic farming, and an authentic, fruity taste. Perfect for finishing salads, antipasti, or pasta dishes with a burst of flavour.

How It Avoids the Trap

This is a genuine cold-pressed oil of "extra virgin" quality. It is intentionally purchased for cold dishes, which prevents it from being misused in a hot pan. The 0.5-litre bottle is a suitable size for a high-quality oil.

Key Advantage & Pros

From biodynamic farming (Demeter certified). Made from Koroneiki olives, which ensures a characteristic flavour.

MATCH FOR: THE ASIAN CUISINE ENTHUSIAST

LEE KUM KEE Pure Sesame Oil 115ml

Why This Fits Their Persona: Indispensable for authentic Asian dishes. This oil is not used for frying but for seasoning soups, salads, marinades, or as part of dipping sauces to achieve the typical nutty flavour.

How It Avoids the Trap

The small 115ml bottle is ideal for a flavouring oil that is only used by the drop. This prevents the toasted sesame oil from going rancid before it's used up. It is clearly positioned as a finishing oil.

Key Advantage & Pros

Made from 100% pure sesame seeds for an intense, authentic aroma. Practical, small packaging unit to ensure freshness.

MATCH FOR: THE CALORIE-CONSCIOUS COOK

More Nutrition 2 Calorie Cooking Oil Spray 200ml

Why This Fits Their Persona: For people who actively watch their calorie and fat intake but don't want to give up fried foods. The spray allows for an ultra-thin, even coating on pans and baking tins.

How It Avoids the Trap

This low-calorie oil spray solves the problem of over-pouring liquid oil. Instead of a spoonful of oil, which can easily contain 100 calories, only a minimal amount is needed here. It is a targeted solution for a specific need.

Key Advantage & Pros

Extremely economical in use with only approx. 2 kcal per spray (according to the manufacturer). High smoke point up to 210°C, making it versatile for frying and grilling.

Which oil is suitable for deep-frying? For deep-frying, you need an oil with a high smoke point, ideally above 200°C. Refined vegetable oils like rapeseed oil, sunflower oil, or special frying oils are a good choice. They are heat-stable and neutral in taste, so the natural flavour of the fried food is preserved.

How do I store cooking oils correctly? Most cooking oils should be stored in a cool, dry, and dark place, as light, heat, and oxygen accelerate the ageing process and can cause the oil to go rancid. A pantry or a closed kitchen cabinet is ideal. Sensitive, cold-pressed oils like flaxseed oil should be stored in the refrigerator after opening and used up quickly.

What does "extra virgin" mean for olive oil? "Extra virgin" is the highest quality grade for olive oil. It means that the oil was extracted directly from olives using only mechanical methods, i.e., cold-pressed or cold-extracted. It must not have any sensory defects and must meet specific chemical parameters. It is a mark of quality for a natural, flavourful oil.