[{"id":415660277968,"handle":"all-products","title":"All Products","updated_at":"2026-07-14T21:05:25+10:00","body_html":"\u003ch2 data-start=\"147\" data-end=\"518\"\u003eExplore the full Peter Augustus range\u003c\/h2\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp data-start=\"147\" data-end=\"518\"\u003eFrom award-winning Wagyu and Angus beef to artisan sausages, pork, lamb, poultry, and specialty condiments. Every product is carefully selected and prepared by our expert butchers, offering restaurant-quality ingredients for your home kitchen. Whether you're after everyday staples or something to impress, you'll find it all here.\u003c\/p\u003e","published_at":"2025-06-30T14:04:53+10:00","sort_order":"best-selling","template_suffix":"","disjunctive":false,"rules":[{"column":"variant_price","relation":"greater_than","condition":"0"}],"published_scope":"global","image":{"created_at":"2025-10-20T12:27:50+10:00","alt":"Assorted packaged meats with Diamantina branding on a white background","width":2016,"height":1512,"src":"\/\/www.peteraugustus.com.au\/cdn\/shop\/collections\/Box_6_-_The_Angus_Selection_Box_2_d5b698d6-320f-45a7-bfd0-83ba5ecf1983.webp?v=1779337195"}},{"id":412989391056,"handle":"beef","title":"Beef","updated_at":"2026-07-14T21:05:25+10:00","body_html":"\u003cp\u003eShop premium beef at Peter Augustus, featuring exceptional Wagyu, Angus, grain-fed, and grass-fed beef sourced from trusted Australian producers and expertly butchered for outstanding quality. Our collection includes premium beef steaks, loin of beef, roasting joints, BBQ favourites, and versatile beef cuts selected for their marbling, tenderness, and rich natural flavour. Whether you are firing up the barbie, pan frying a steak, preparing a family roast, or filling the freezer with quality beef meat cuts, you will find some of the finest cuts of beef Australia has to offer. Buy beef online with confidence and enjoy convenient delivery straight to your door, plus the flexibility of Afterpay with four interest-free payments. Honest Australian beef, expertly prepared and ready for every occasion.\u003c\/p\u003e","published_at":"2024-10-22T15:22:40+10:00","sort_order":"created-desc","template_suffix":"","disjunctive":false,"rules":[{"column":"type","relation":"equals","condition":"Beef"}],"published_scope":"global","image":{"created_at":"2025-10-20T12:27:36+10:00","alt":"Raw Wagyu rump cap steak on wire rack with a bowl of coarse salt on marble background","width":2016,"height":1512,"src":"\/\/www.peteraugustus.com.au\/cdn\/shop\/collections\/PA_WagyuRump_BeefCollections_31db8068-2d78-426e-8358-411a9c02544d.webp?v=1779163629"}},{"id":417129726160,"handle":"best-sellers","updated_at":"2026-07-14T21:05:25+10:00","published_at":"2025-10-23T01:12:27+10:00","sort_order":"best-selling","template_suffix":"","published_scope":"global","title":"Best Sellers","body_html":"\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eExplore the Best-selling selections in our premium range at Peter Augustus, where superior quality and exceptional flavour unite. Our top picks are loved by discerning home chefs and those just starting their culinary journey. These are the products customers return for time and again, thanks to phenomenal taste and consistent results.\u003c\/p\u003e","image":{"created_at":"2025-10-28T16:06:28+10:00","alt":"Diamantina Wagyu corned silverside raw beef cut with bay leaves and peppercorns","width":2016,"height":1512,"src":"\/\/www.peteraugustus.com.au\/cdn\/shop\/collections\/Thankyoucard-PeterAugustus_b0e81796-019d-4fac-89b0-7e86422d5f35.webp?v=1779245663"}},{"id":420096737488,"handle":"best-selling-collection","title":"Best selling products","updated_at":"2026-07-14T21:05:25+10:00","body_html":null,"published_at":"2026-05-27T21:31:50+10:00","sort_order":"best-selling","template_suffix":null,"disjunctive":false,"rules":[{"column":"variant_price","relation":"greater_than","condition":"0"}],"published_scope":"web"},{"id":419320430800,"handle":"black-onyx","title":"Black Onyx","updated_at":"2026-07-13T21:04:45+10:00","body_html":"\u003cp\u003e\u003cspan data-sheets-root=\"1\"\u003eOur Black Onyx long-fed Pure Black Angus is a standout in premium beef, raised to exacting standards and grain-fed for a minimum of 230 days. Completely HGP-free, this program delivers enhanced marbling well above traditional Angus, resulting in a tender, juicy eating experience with a rich, full-bodied flavour. Renowned for its consistency and quality, Black Onyx showcases the signature depth and character of true Angus beef, making it a trusted choice for those seeking elevated performance and exceptional taste.\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e","published_at":"2026-03-25T22:17:17+10:00","sort_order":"best-selling","template_suffix":"","disjunctive":true,"rules":[{"column":"title","relation":"contains","condition":"Black Onyx"},{"column":"tag","relation":"equals","condition":"black onyx_SB 3"},{"column":"tag","relation":"equals","condition":"black onyx_SB 5"},{"column":"tag","relation":"equals","condition":"beef_Black Onyx"}],"published_scope":"global","image":{"created_at":"2026-04-23T09:17:24+10:00","alt":"Black Onyx Bone","width":2048,"height":2048,"src":"\/\/www.peteraugustus.com.au\/cdn\/shop\/collections\/BlackOnyx_10.webp?v=1779922077"}},{"id":415660736720,"handle":"butchers-bulk-buys","title":"Bulk Buys","updated_at":"2026-07-14T21:05:25+10:00","body_html":"\u003cp\u003eOur Butcher's Bulk Buys brings together premium Australian beef from Stanbroke's Queensland stations across Pure Wagyu, Wagyu, Black Onyx, Angus, grain-fed, and grass-fed, packaged in larger quantities so you can stock the freezer without sacrificing quality. Every cut is butchered fresh and delivered chilled, giving you the same standard you would expect from a single order, just more of it. 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Each cut is carefully prepared to Peter Augustus standard and selected for consistent eating quality, whether you are slow-roasting a whole leg for a long Sunday table or carving a whole fillet for a truly special occasion.\u003c\/p\u003e","published_at":"2026-02-23T14:19:32+10:00","sort_order":"best-selling","template_suffix":"","disjunctive":false,"rules":[{"column":"tag","relation":"equals","condition":"Roasts \u0026 Whole Cuts"}],"published_scope":"global","image":{"created_at":"2025-10-20T12:28:37+10:00","alt":"French trimmed lamb rack on a plate beside a bowl of gourmet salt from Peter Augustus Craft Butcher","width":2016,"height":1512,"src":"\/\/www.peteraugustus.com.au\/cdn\/shop\/collections\/Lamb_f7fc766b-2e09-4faf-98b8-5049efa587cc.webp?v=1779409565"}},{"id":419257417936,"handle":"sale","title":"Sale","updated_at":"2026-07-14T21:05:25+10:00","body_html":"\u003cp\u003eShop our SALE collection and enjoy exclusive savings on premium meats, BBQ favourites, family essentials, and specialty cuts. 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It performs exceptionally well on the grill or pan, developing a caramelised crust while staying juicy and tender inside. Whether it is the centrepiece of a dinner party or a straightforward weekend steak, Sirloin is the cut that never needs an introduction.\u003c\/p\u003e","published_at":"2026-03-12T15:19:08+10:00","sort_order":"best-selling","template_suffix":"","disjunctive":true,"rules":[{"column":"product_metafield_definition","relation":"equals","condition":"gid:\/\/shopify\/Metaobject\/31281545424"},{"column":"tag","relation":"equals","condition":"striploin_Sirloin"},{"column":"tag","relation":"equals","condition":"sirloin"},{"column":"tag","relation":"equals","condition":"angus_Sirloin Steak"},{"column":"tag","relation":"equals","condition":"pure wagyu_Sirloin Steak"},{"column":"tag","relation":"equals","condition":"wagyu_Sirloin Steak"},{"column":"title","relation":"contains","condition":"Club"}],"published_scope":"global","image":{"created_at":"2026-05-20T15:24:12+10:00","alt":"Marbled raw beef steak on a white marble surface","width":2016,"height":1512,"src":"\/\/www.peteraugustus.com.au\/cdn\/shop\/collections\/PureWagyuSirloinSB10_2.webp?v=1779342826"}},{"id":419338420432,"handle":"specialty-items","title":"Specialty Items","updated_at":"2026-07-14T21:05:25+10:00","body_html":"\u003cp data-start=\"0\" data-end=\"327\"\u003eOur selection of specialty items showcases unique, premium offerings designed to elevate your cooking and bring something a little different to the table. Carefully curated for quality and flavour, this range features seasonal favourites, chef-inspired products, and exclusive cuts you won’t always find in everyday selections.\u003c\/p\u003e\n\u003cp data-start=\"329\" data-end=\"656\" data-is-last-node=\"\" data-is-only-node=\"\"\u003ePerfect for entertaining, gifting, or creating standout meals at home, these specialty items are chosen for their exceptional taste, versatility, and craftsmanship. 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20kg Bulk Box - Black Onyx Sirloin Whole SB-3
is backordered and will ship as soon as it is back in stock.
Get cuts tailored to your kitchen
Want it portioned a certain way? Add your cutting and packing instructions in the order note at checkout. Our expert butchers are more than glad to process it for you.
Order summary · Add order note
Cutting and packing instructions, for example portion the rump into 300g steaks and vacuum pack in pairs.
Buying in bulk for a venue?
Open a wholesale account
Restaurants, cafes and caterers buy our premium beef in bulk at trade pricing on volume. Net terms for approved accounts, a dedicated account manager, and the same consistent quality on every delivery.
Trade pricing applies once your account is approved. Prices exclude GST and delivery.
Buy 20kg Bulk Box - Black Onyx Sirloin Whole SB-3
Premium Black Onyx sirloin delivering exceptional eating quality, tenderness, and rich beef flavour for high-end wholesale kitchens.
Diamantina's 20kg Bulk Box - Black Onyx Sirloin Whole SB-3 showcases the Black Onyx breed's premium eating quality with a Marble Score of 3. This specific marbling ensures a tender, flavourful experience that exceeds ordinary expectations. Our sirloin is grain-finished for a minimum of 230 days, enhancing the beef's texture and rich taste. Originating from Australia, this sirloin promises consistent high-end steak performance, perfect for various cooking methods like grilling or pan-searing.
Customers choose our Black Onyx Sirloin for its strong versatility and efficient kitchen operations. Ideal for culinary professionals and passionate home cooks, this sirloin meets diverse culinary needs, from everyday meals to special occasions. Backed by Diamantina's commitment to quality, our sirloin guarantees satisfaction with every serving. Its unique breed quality, coupled with an exceptional feeding program, assures a superior dining experience. Shop now to experience the outstanding quality and value of our 20kg Bulk Box - Black Onyx Sirloin Whole SB-3.
Our 20kg Bulk Box - Black Onyx Sirloin Whole SB-3 offers premium eating quality with its SB-3 marble score, ensuring a superior steak experience.
Black Onyx breed guarantees consistent high-end steak performance.
Grain finished for a minimum of 230 days enhances flavour.
Australian origin ensures stringent quality standards.
The whole sirloin cut supports efficient kitchen operations.
Performance & Quality
SB-3 specification for premium eating quality
Excellent balance of tenderness and flavour
Consistent performance across multiple steak cuts
Reliable texture for repeatable cooking results
Wholesale Advantages
20kg bulk format for efficient kitchen operations
Ideal for premium steak cutting and roasting
Strong yield with minimal waste
Reliable supply for consistent menu execution
Who Should Choose This 20kg Bulk Box - Black Onyx Sirloin Whole SB-3?
Our 20kg Bulk Box - Black Onyx Sirloin Whole SB-3 is ideal for chefs, caterers, and culinary professionals who demand consistent high-end steak performance. Its Australian origin and 230-day grain finishing ensure premium eating quality, making it perfect for various culinary applications.
Restaurant owners seeking efficient kitchen operations with versatile whole cuts
Catering businesses requiring bulk beef for large events or functions
Retailers looking to offer premium beef options in their stores
Food service professionals aiming to provide quality steak experiences
Home cooks planning to host special gatherings or celebrations
Best Cooking Methods for Sirloin
Cooking our 20kg Bulk Box - Black Onyx Sirloin Whole SB-3 to perfection involves understanding its grain-finished fat rendering and heat sensitivity, ensuring consistent high-end steak performance. Each method enhances the sirloin's premium eating quality, maintaining the SB-3 marble score's melt-in-the-mouth texture.
Pan Sear: Use medium-high heat to ensure even fat rendering; sear each side for 3-4 minutes to lock in juices.
Grill: Preheat to high. Grill for 4-5 minutes per side, allowing the marble score to create a caramelised crust.
BBQ: Maintain an indirect heat for 5-7 minutes per side, ensuring slow fat melting and flavour infusion.
Oven: Roast at 180°C. Cook for 15-20 minutes for medium-rare, letting the sirloin rest for 5 minutes to redistribute juices.
Delivery & Storage
Delivered fresh, chilled in vacuum-sealed packaging for maximum freshness.
Store refrigerated at 0–4°C
Consume by the use-by date or freeze on arrival
Keep vacuum sealed until ready to use
Thaw under refrigeration before cooking if frozen
Do not thaw at room temperature
Do not refreeze once thawed
Striploin
Striploin, also known as Sirloin, New York Strip, or Porterhouse (when bone-in), is a premium cut prized for its bold flavour and balanced tenderness. It comes from the short loin of the cow and features a fine grain with a satisfying bite. It's a favourite among chefs and home cooks alike for its generous marbling and robust, beefy taste.
