McDonald’s avoids calling its shakes “milkshakes” because they don’t meet the strict legal or traditional definitions of a milkshake in some regions.
A true milkshake typically requires milk, ice cream, and flavoring, blended to a thick consistency. McDonald’s shakes, however, use a soft-serve base made from a mix that includes dairy but also stabilizers, emulsifiers and other ingredients to achieve a consistent texture and shelf life.
In some states, like Massachusetts, regulations define a milkshake as containing a minimum percentage of milkfat, which McDonald’s shakes may not always meet.
By calling them “shakes” instead, McDonald’s sidesteps potential legal issues or customer expectations about traditional milkshake standards. The term also aligns with their branding for a quick, dessert-like beverage that’s distinct from their McFlurry or other frozen treats. This naming choice reflects both regulatory compliance and marketing strategy to emphasize a unique product.

