Why do reese's cups have ridges

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Last updated: April 8, 2026

Quick Answer: Reese's Peanut Butter Cups have ridges primarily for functional and branding reasons. The ridges help prevent the chocolate from cracking during manufacturing and shipping by providing structural reinforcement. They also create a distinctive texture that enhances the eating experience and serve as a recognizable trademark for the Hershey Company product. The design has been consistent since the candy's introduction in 1928, with the ridges becoming an iconic feature.

Key Facts

Reese's Peanut Butter Cups were invented by H.B. Reese in 1928
The ridges help prevent chocolate cracking during temperature changes
Reese's uses about 90 million pounds of peanuts annually for production
Over 80 million Reese's Cups are produced daily worldwide
The ridges create more surface area for better chocolate-to-peanut butter ratio

Overview

Reese's Peanut Butter Cups were created by former Hershey employee Harry Burnett Reese in 1928 in Hershey, Pennsylvania. Originally called "Penny Cups" because they sold for one cent each, the candy featured the distinctive ridged design from its earliest versions. H.B. Reese started the H.B. Reese Candy Company independently, using Hershey's chocolate as his primary ingredient. The company was acquired by The Hershey Company in 1963 for $23.5 million. Today, Reese's is the top-selling candy brand in the United States, generating over $2 billion in annual sales. The classic two-cup package design with orange, yellow, and brown packaging was introduced in the 1970s and has become one of the most recognizable candy packages worldwide.

How It Works

The manufacturing process for Reese's Peanut Butter Cups involves several precise steps that utilize the ridges functionally. First, liquid chocolate is poured into ridged cup-shaped molds at approximately 90°F (32°C). The ridges in the molds create the characteristic pattern on the chocolate shell. After the chocolate partially sets, a precise amount of peanut butter filling—typically about 60% of the cup's volume—is injected into each cup. The ridges help distribute the filling evenly and prevent the peanut butter from pushing through the chocolate shell. Finally, more liquid chocolate is added to seal the cup. During cooling and packaging, the ridges provide structural support that helps prevent cracking when the candy experiences temperature fluctuations during shipping and storage. The design also creates more surface area between the chocolate and peanut butter, enhancing flavor release when eaten.

Why It Matters

The ridges on Reese's Cups matter for both practical and branding reasons. Functionally, they prevent product waste by reducing breakage during manufacturing and distribution—a significant concern for a product that sells billions of units annually. The texture created by the ridges enhances the sensory experience, allowing consumers to notice the contrast between the smooth peanut butter and textured chocolate. From a branding perspective, the ridges have become an instantly recognizable trademark that distinguishes Reese's from competitors. This distinctive design has helped maintain market dominance for decades, with Reese's consistently ranking as America's favorite candy in annual surveys. The ridges also facilitate portion control, as they naturally guide breaking the cup into sections, though most consumers eat them whole.