d = {'Chin PTE LTD': {'Carrot Cake': 22, 'Chocolate Cake': 12, 'Beer': 89},
    'COQ SEAFOOD': {'GRILLED AUSTRALIA ANGU': 1, 'CRISPY CHICKEN WINGS': 1}}
""", """.join(['{}: {}'.format(merchant, ', '.join(['{}: {}'.format(product,
    quantity) for product, quantity in list(products.items())])) for merchant,
    products in list(d.items())])
How to remove the all the curly bracket in dictionary of dictionaries