Gulungan Daging Sapi Wortel

Bahan-bahan (4 porsi)

• ¾ lb thinly sliced beef (such as ribeye)
• ¾ lb carrots
• ¼ tsp freshly ground black pepper
• ¼ cup potato starch or cornstarch
• 2 Tbsp neutral oil ((divided))
• 4 Tbsp mirin
• 4 Tbsp soy sauce