What Is Shortening?
Shortening is a solid fat used in baking to create tender, flaky, and structured products like pastries, cookies, and cakes. Unlike butter or margarine, shortening is 100% fat with no water, giving it unique functional properties. Palm oil and its fractions are among the most common base materials for commercial shortenings due to their versatility and consistent supply.
Palm Fractions: The Building Blocks
Palm oil is naturally semi-solid at room temperature. Through fractionation, it is separated into two main components: - Palm olein: the liquid fraction, rich in unsaturated fats - Palm stearin: the solid fraction, rich in saturated fats
By blending different ratios of olein and stearin, manufacturers can create shortenings with tailored melting points, plasticity, and crystal structure. This allows customisation for specific bakery applications.
How Shortenings Are Built
Typical palm-based shortenings combine: - Palm stearin for solid structure and heat resistance - Palm olein for spreadability and mouthfeel - Fully hydrogenated palm oil (if needed) to increase solid fat content without trans fats - Emulsifiers (e.g., mono- and diglycerides) to improve aeration and crumb texture
The blend is then tempered and crystallised to achieve a smooth, plastic consistency that creams easily with sugar and holds air during mixing.
Types of Palm-Based Shortenings
- All-purpose shortening: balanced olein-stearin blend for general baking
- High-ratio shortening: contains added emulsifiers to handle extra sugar and liquid in cakes
- Puff pastry shortening: higher melting point, made with stearin-rich blends, to create distinct flaky layers
- Frying shortening: more olein for liquid stability, sometimes with antioxidants for shelf life
Key Properties for Buyers
When sourcing palm-based shortening, consider: - Solid fat content (SFC) at different temperatures (e.g., at 10°C, 20°C, and 37°C) – determines plastic range and mouthfeel - Melting point – should match the intended application (e.g., 32–36°C for all-purpose) - Crystal form – beta-prime crystals are preferred for smoothness and aeration - Oxidative stability – important for products with long shelf life
Request a spec sheet showing SFC curve, melting point, and fatty acid composition to verify the shortening suits your bakery's needs.
Practical Tips
- Palm shortenings are non-hydrogenated and trans-fat free when based solely on fractions, making them a healthier alternative to partially hydrogenated fats.
- Storage at 15–25°C preserves crystal structure; avoid temperature swings that cause graininess.
- Work with suppliers who provide detailed technical data and can customise blends for your specific bakery processes.
Understanding these fundamentals will help you evaluate palm-based shortenings with confidence, ensuring consistent quality in your finished products.