Brie Potato Dauphinoise (Gratin)

Bahan-bahan (10 porsi)

• 1 1/2 cups thickened / heavy cream (, full fat - or just pure cream (Note 1))
• 2 g arlic cloves (, finely minced)
• 30 g / 2 tbsp unsalted butter (, melted)
• 1.25 kg / 2.5 lb starchy potatoes ((Aus: Sebago dirt brushed, US: Russet, UK: Maris Piper) (Note 2))
• 1 tsp cooking / kosher salt
• 1/2 tsp black pepper
• 2 tsp thyme leaves (, fresh (optional - but highly recommended, Note 3))
• 3 x 125g / 4oz small brie (8cm / 3.2" wide) (, fridge cold, cut in half horizontally (or camembert) (Note 4))