These are bite-sized, soft rice cakes with a multi-layered texture:
Outer Layer: Soft and chewy traditional mochi made from glutinous rice.
Middle Layer: A fluffy, sweet marshmallow filling.
Core: A rich, creamy milk center 
Key Features
Hokkaido Milk: The recipe specifically uses milk sourced from Hokkaido, Japan’s premier dairy region, known for its high quality and rich flavor [1].
Texture: The name "Mochi Mochi" (もちもち) is a Japanese onomatopoeia describing a texture that is bouncy, soft, and elastic [1, 2].
Flavor Profile: It offers a delicate balance of milky sweetness and a pillowy feel from the marshmallow [1].
Nutritional Info (Approximate per 100g)
Calories: ~393 kcal [5]
Fat: 9.0 g [5]
Carbohydrates: 76.0 g [5]
Protein: 2.0 g [5]
Quantity: 8 pieces.