Mix-in desserts are traditionally sold in an ice cream parlor and are made at the time of ordering.

Popular examples of this dessert include Dairy Queen's Blizzard and McDonald's McFlurry.

A mix-in is a type of dessert made with ice cream and another product that is either blended or folded in.

The concept of mixing in additional flavors at the time of ordering was created in North Dakota in the 1930's.

[citation needed] His system spread across the industry from his store, and became the model for many other ice cream businesses and desserts.