What is a key component of the frozen winter beverages introduced at Dunkin Donuts?

Whipped cream topping is a key component of the frozen winter beverages introduced at Dunkin Donuts because it enhances the overall presentation and indulgence factor of these beverages. The addition of whipped cream adds a creamy texture and visual appeal, making the beverage feel more like a dessert rather than just a drink. This aligns with the seasonal theme, as winter beverages are often designed to deliver a comforting, festive experience.

In contrast, while mocha fudge, cold brew coffee, and milkshake base may be relevant ingredients for various products at Dunkin Donuts, they do not specifically define the frozen winter beverages. Mocha fudge may be part of certain flavor offerings, cold brew coffee typically represents a separate drink category, and milkshake base would suggest a different preparation method not specifically tied to the winter offerings. Thus, whipped cream topping stands out as a signature element that enhances the flavor and enjoyment of the frozen winter beverages.