Who is the largest ice cream manufacturer in the world?

The largest ice cream manufacturer in the world is recognized as Unilever, which owns Breyers Ice Cream, among many other brands. Although the question lists only specific brands, it is important to clarify that Edy's Grand Ice Cream and Dreyer's Ice Cream are actually the same product but marketed under different names in different regions. They are both owned by Nestlé. Unilever and its brands lead the industry when it comes to production volume and market reach, which is critical in determining the largest manufacturer.

In contrast, Blue Bell Creameries is well-known but operates on a smaller scale compared to global giants like Unilever. Breyers, a core Unilever brand, has a significant presence in the market, but it is not typically highlighted as the largest. Thus, the correct answer reflects a broader perspective on the industry instead of just comparing these individual brands.