Curried Cabbage & Kale Gratin

Ingredients

• 2 Tbsps fat — my preference is always animal fat
• 2 slices thick-cut bacon [totally optional]
• 1 large green dark leek
• 3 cloves garlic
• 1 tsp curry powder
• 1 small cabbage head
• 1 bunch kale
• 35 g water
• some black salt and pepper
• 2 sprigs fresh thyme
• 3 large eggs
• 122 ml milk
• 108 ml white bread crumbs
• 132 g gruyere cheese
• 2 Tbsps butter