What on earth is Mayochup? Having gained great popularity in the United States, mayochup is a combination of mayonnaise and ketchup and it has finally arrived in Finland! The authentic tomato flavour of Herkkumaa’s delicious ketchup complements our smooth mayonnaise perfectly. As spring arrives, the barbecue is Mayochup’s best friend, but this tomato mayonnaise is also a delicious condiment for potatoes, vegetables and bread.