Gulungan Kubis Isi Jepang

Bahan-bahan (4 porsi)

• ½ onion
• 2 Tbsp extra virgin olive oil ((divided))
• 1 head green cabbage
• 1 tsp Diamond Crystal kosher salt ((for boiling the cabbage))
• 1 Tbsp all-purpose flour (plain flour)
• 1 lb ground meat
• 1 large egg (50 g w/o shell)
• ⅓ cup panko (Japanese breadcrumbs)
• 2 Tbsp milk
• ½ tsp nutmeg
• 1 tsp Diamond Crystal kosher salt
• ⅛ tsp freshly ground black pepper
• 2 bay leaves
• 1 clove garlic ((minced))
• 1 can diced tomatoes ((14.5 oz, 411 g))
• 1 Tbsp white wine
• ½ tsp Diamond Crystal kosher salt
• ⅛ tsp freshly ground black pepper
• 1 cup chicken or vegetable stock
• ½ Tbsp unsalted butter
• parsley ((chopped))