The iridescence on pastrami beef, roast beef and spiced beef was the most visible, it is also obviously found on westen-style sliced ham and salted pork.

• 牛肉制品中帕斯雀牛肉、烤牛肉和酱牛肉彩虹色斑点最明显，猪肉制品中西式火腿片和成肉最明显。