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Ostrich Fillet Burger with Caramelized Onion Sauce

lincolnobie

Introduction

Step up your burger game with this flavorful ostrich fillet burger! Ostrich meat is lean, tender, and rich in protein, offering a unique flavor that's milder than beef and perfect for an elevated burger experience. Topped with a sweet and savory caramelized onion sauce, tangy feta, and spicy peppadews, this burger has a balanced, gourmet touch that’s sure to impress. Ready in just 30 minutes, it’s ideal for a quick, unforgettable meal.


Servings: 4

Prep Time: 10 minutes

Cook Time: 20 minutes


Ingredients

Caramelized Onion Sauce

  • Olive or avocado oil for frying

  • 1 tbsp butter

  • 1 onion, thinly sliced

  • 1 tbsp balsamic vinegar

  • 1 tsp sugar

  • ½ cup red wine or beef stock

  • 1 sprig rosemary, leaves chopped


Ostrich Burger

  • 1 lb ostrich fillet

  • 4 rolls of your choice, split

  • 2 tbsp BBQ sauce

  • Handful of baby greens or arugula

  • 8 peppadews, chopped

  • ⅓ cup crumbled feta


Cooking Instruction:


Caramelized Onion Sauce

  1. Cook the Onions: Heat a splash of oil and butter over medium-high heat. Add the sliced onion and cook, stirring occasionally, until caramelized and golden, about 20 minutes.

  2. Add Sauce Ingredients: Stir in balsamic vinegar, sugar, red wine (or beef stock), and rosemary. Let it simmer until reduced to a thick sauce, about 5-7 minutes.

  3. Season: Taste and add salt and pepper as needed.


Ostrich Burger 

  1. Prep the Fillet: Rub the ostrich fillet with a little oil and season with salt and pepper. 

  2. Cook the Fillet: Heat a griddle pan over high heat. Sear the fillet for about 5 minutes on each side for medium-rare, or adjust time for desired doneness. Rest for 5 minutes, then slice thinly.

  3. Toast the Rolls: Spread extra butter on the cut sides of the rolls and toast in a hot pan until golden.

  4. Assemble the Burgers: Spread BBQ sauce on each roll. Add a layer of baby greens, ostrich slices, caramelized onion sauce, chopped peppadews, and crumbled feta. Serve immediately and enjoy a bold, sophisticated burger experience!


Tip to Perfection:

  • Marinate for Extra Flavor (Optional): Ostrich meat is naturally mild, so if you’d like a bolder taste, try marinating the fillet briefly with a little soy sauce, balsamic vinegar, or a dash of spices before cooking. Just 15-20 minutes can enhance the flavor without overpowering the natural taste.

  • Perfectly Caramelize the Onions: Cook the onions slowly over medium heat with a mix of oil and butter, stirring occasionally. The sugar in the onions will naturally caramelize, creating a rich, sweet flavor. Adding the balsamic vinegar and wine or beef stock at the end will create a thick, flavorful sauce to complement the ostrich fillet.

  • Don’t Overcook the Ostrich Fillet: Ostrich is very lean, so it can quickly dry out if overcooked. Sear the fillet on high heat for about 5 minutes on each side for medium-rare. For best results, let the meat rest for a few minutes after cooking to allow the juices to redistribute, keeping it juicy and tender.

  • Toast the Rolls for Added Texture: Buttering and toasting the rolls gives the burger a delicious golden crust and prevents the sauces from soaking into the bread too quickly. Use a hot pan or skillet for a perfectly crisp texture.

  • Balance the Toppings: Layering the caramelized onion sauce, peppadews, and crumbled feta provides a balance of sweetness, tang, and a bit of heat to match the mild flavor of ostrich. Don’t skip the greens (like arugula) for added freshness and a slight peppery kick, which enhances the overall flavor profile of the burger.

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