When it comes to making exceptional South African boerewors, the casing you choose is just as important as the meat you grind and the spice blend you mix. The perfect casing is the unsung hero, locking in juices, providing that essential “snap,” and holding the sausage together on the braai. But with so many choices – natural vs. collagen, sheep vs. hog, wider vs. thinner calibrations – how do you know which boerewors casing is right for your business?
This comprehensive guide breaks down everything you need to know about selecting casings for boerewors in South Africa. From understanding casing calibration to comparing natural and collagen options, we’ll help you make an informed decision that balances authenticity, efficiency, and profitability.
Many boerewors producers overlook a critical business factor: casing calibration. The calibration of a casing directly impacts your pick-up price and, consequently, your competitiveness in the market.
When choosing a boerewors casing, you face a fundamental trade-off: natural casings offer an authentic texture and flavour, while collagen casings offer consistency and ease of use at a lower cost.
If your customers demand a premium, artisanal boerewors experience – the authentic snap that transports them to a farm braai – natural hog or sheep casings are the way to go. However, if you prioritise cost-efficiency, consistency across thousands of units, and ease of staff training, collagen is the superior choice.
Whether you opt for natural or artificial, you must also choose the caliber (diameter) of your casing. For traditional South African boerewors, the conventional standard is a casing of approximately 2cm in diameter. This standard is widely accepted as the benchmark for authentic boerewors.
A less widely understood but extremely important economic reality for commercial producers is that collagen casings can significantly improve your profit margins through more efficient casing calibration.
The consistency of a casing affects price through its filling capacity, meaning that a product with a wider casing calibration will have a higher pick-up price than a thinner calibration – even if the cost per kilogram of the product is the same.
For the same cost per kilogram:
A product made using a casing with a wider calibration offers four portions
A product made using a thinner calibration casing offers five portions
This means that by choosing a thinner casing calibration, you’re able to offer a more competitive pick-up price. What’s more, thinner casings yield more portions than thicker casings.
For boerewors producers, applying these calibration principles means that selecting the right collagen casing thickness and diameter directly influences both production economics and retail pricing competitiveness.
| Measurement | Metric Equivalent | Typical Application |
|---|---|---|
| Approximately 2 cm | ~20 mm | Traditional South African boerewors (standard coil) |
| 16–20 mm | 16–20 mm | Thin breakfast-style boerewors links |
| 24–28 mm | 24–28 mm | Thicker farm-style boerewors |
Natural casings remain the traditional and most authentic choice for boerewors, prized by South African sausage makers who prioritise premium quality. Below is a breakdown of the two main options.
| Casing Type | Characteristics | Best For | Preparation |
|---|---|---|---|
| Hog Casings | Strong, elastic, right diameter for conventional boerewors (~2 cm) | Most common choice for traditional boerewors | Soak in warm water 15–30 minutes |
| Sheep Casings | Thin, tender, delicate resistance | Smaller boerewors links, lighter sausages | Soak in warm water; handle carefully |
Collagen casings offer several distinct advantages for boerewors production:
Easy to use: No need for soaking or extensive preparation
Uniformity: Casings are consistent in size and shape, ensuring a professional appearance
Good texture and bite: Mimics the snap and feel of natural casings
Cost-effective: Lower production cost compared to natural casings
Automation-friendly: Compatible with manual and automatic stuffing machines
Available boerewors casing calibers in collagen for effective production range from approximately 14 mm up to 55 mm depending on product specifications. For the classic South African boerewors profile (approximately 2 cm finished diameter), collagen casings in the 18–22 mm range are generally the optimal choice.
Some collagen casings for boerewors are now available with added flavours, such as garlic or smoke. This can infuse the outer layer of the sausage with an extra kick during the cooking process.
Food safety compliance is critical. For boerewors destined for Muslim consumers or export markets, Halal certification of casings is essential. Halal collagen casings for South African use require sourcing from animals slaughtered according to Islamic law, with documented traceability. Non-halal slaughter methods make casings haram regardless of casing type. Many natural casings – particularly sheep casings – are processed in Halal-certified facilities in South Africa.
Collagen casings come in various colours:
Clear/Natural: Traditional appearance
Mahogany/Smoked: Pre-smoked appearance for enhanced braai colour
Caramel: Intermediate warm tone
| Production Scale | Recommended Casing Type | Rationale |
|---|---|---|
| Home / Artisanal | Natural hog or sheep casings | Authentic texture, traditional appeal |
| Small Butchery (under 500 kg/week) | Natural or standard collagen | Balance of quality and practicality |
| Large Butchery (500–2000 kg/week) | Collagen casings (18–22 mm) | Consistency, labour savings, cost-effectiveness |
| Industrial (over 2000 kg/week) | High-performance collagen casings | Efficiency, automation, precise calibration |
For commercial production, collagen casings may be the best option due to their consistency, ease of use, and cost-effectiveness. While they may lack some of the “snap” of natural casings, they still provide an excellent result. For producers seeking high-quality results with greater production efficiency, collagen casings are an excellent option.
Freddy Hirsch is Southern Africa’s leading supplier of ingredients as well as meat processing equipment, supplying spice, food ingredients, casings, and equipment to the red meat and poultry processing industries. They offer a range of collagen, cellulose, and natural casings for boerewors manufacturers.
Viscofan and Devro are the key international suppliers for those seeking to import directly into South Africa. The South Africa Sausage Casing Market is projected to see growth during 2025 to 2029, with rising demand for processed meat products attracting increased supplier interest from both domestic and international manufacturers.
A: For traditional, artisanal boerewors, natural pig (hog) casings are recommended. They provide the best texture, flavour, and authenticity, making them ideal for home cooks and butchers seeking an authentic experience.
A: Yes. Collagen casings are durable enough to handle large volumes and provide a consistent, professional finish. Their uniformity ensures every sausage looks the same, which is a major plus for large events and retail sales.
A: Collagen casings are generally less expensive than natural casings. Natural casings can be more expensive than synthetic options and may be harder to find in some regions. For large-scale commercial operations, this cost difference can be significant.
A: The traditional standard diameter for boerewors is approximately 2 cm (roughly 20 mm).
A: Yes, collagen casings are designed for high-temperature cooking and perform reliably on a braai. They adhere closely to the meat and allow full smoke penetration for the characteristic South African braai flavour.
Choosing the right boerewors casing is a balancing act between tradition and practicality. Whether you export South African boerewors globally or supply the local neighbourhood butcher, your choice of casing directly impacts your final product and your profit margin.
For those chasing the highest premium market, the authentic snap and rustic look of natural hog casings is irreplaceable. For the vast majority of commercial producers looking for consistency, savings, and scalability, collagen boerewors casings are the superior choice.
When combined with the right spices – featuring the essential coarse ground coriander, cloves, allspice, and brown vinegar – collagen casings allow you to produce a boerewors that is consistently delicious, visually appealing, and profitable. Evaluate your production goals, test different calibers, and choose the boerewors casing that best meets your needs.
