Umami Beef & Bone Marrow Skewers with Black Garlic-Rosemary Glaze

Succulent cubes of beef sirloin, interspersed with luxurious bone marrow, are skewered and broiled to achieve a glorious, charred exterior. A deeply complex glaze, featuring the fermented sweetness of black garlic, aromatic rosemary, and the savory depth of rendered duck fat, is brushed on during a final roast, creating an intensely flavorful and satisfying snack.

Ingredients

• Beef sirloin200 g
• Bone marrow60 g
• Black garlic3 cloves
• Shallot1 tbsp
• Fresh rosemary0.5 tsp
• Rendered duck fat30 g
• Red wine vinegar1 tsp
• Beef bone broth30 ml
• Flaked sea saltto taste
• Freshly ground black pepperto taste
• Bamboo skewers4 ea

Method

1. Preheat your oven's broiler to high. Thread the beef sirloin cubes and bone marrow cubes alternately onto the soaked bamboo skewers. Season generously with flaked sea salt and freshly ground black pepper.
2. Arrange the skewers on a wire rack set over a baking sheet (this allows fat to drip and promotes even charring).
3. Broil the skewers for 3-4 minutes per side, turning once, until a dark, flavorful crust develops on the beef and the marrow begins to soften and render. This intense heat creates a robust Maillard reaction.
4. While the skewers broil, prepare the black garlic glaze: In a small saucepan, gently melt the duck fat over low heat. Add the mashed black garlic, minced shallot, and minced rosemary. Sauté gently for 2 minutes until fragrant.
5. Stir in the red wine vinegar and reduced beef bone broth. Simmer for 1 minute until the glaze slightly thickens and combines. Remove from heat.
6. Reduce oven temperature to 200°C (400°F). Remove the skewers from under the broiler. Generously brush the black garlic-rosemary glaze over all sides of the beef and marrow.
7. Return the skewers to the oven and roast for an additional 4-6 minutes, basting once more halfway through, until the beef reaches your desired doneness and the glaze is beautifully caramelized and sticky.
8. Serve the skewers immediately, allowing the rich aromas to envelop you.