Marcus Samuelsson's Ethiopian Tibs

Ingredients

• 1 lb beef tenderloin, cubed
• canola oil, to taste
• ½ teaspoon kosher salt, plus more to taste
• pepper, to taste
• 1 tablespoon berbere, plus more to taste
• 2 cups broccoli rabe, roughly chopped
• 2 teaspoons spiced butter, niter kibbeh, or clarified butter
• 1 medium red onion, thinly sliced
• 2 cloves garlic, minced
• 1 ginger, 1 inch (2 cm) piece, peeled and minced
• 2 jalapeñoes, sliced
• 2 sprigs fresh rosemary, leaves, chopped
• ½ teaspoon ground cumin
• ½ cup crushed tomato, canned
• 2 tablespoons red wine vinegar
• 2 teaspoons dijon mustard
• 2 medium tomatoes, chopped
• 2 teaspoons fresh cilantro, chopped
• injera, for serving
• cheese, fresh - Ayib, for serving