"The Unfinished Ice Cream"—The Endless Spirit of Kaizen in Choco Monaka Jumbo

1 The Allure of "Incompleteness" That Attracts Foreigners

1-1 The Question of "Why Only in Japan?"

Similar products are not found in major supermarkets in North America or Europe. Articles in foreign media describe it as a "local ice cream you must buy when you visit Japan," and travel YouTubers post "buyout challenges." For foreigners, the exclusivity itself is part of the flavor.japantimes.co.jpdime.jp

1-2 Brand Strategy Declaring "Incomplete"

In an interview with ITmedia in June 2025, the development leader stated, "Every year, raw materials and machinery evolve slightly, and the same recipe as last year will not be optimal." In short, the moment "completion" is declared, improvement stops. This encapsulates Japan's Kaizen culture.itmedia.co.jp

2 Two Barriers Creating Crispiness

2-1 Chocolate Shell Sprayed Inside the Monaka

If the moisture from the ice cream transfers to the monaka, it becomes soggy. Therefore, a 0.3 mm "chocolate shield" is sprayed on the inner wall to physically block moisture transfer. Since its introduction in 1988, the chocolate composition, spray angle, and cooling time have been fine-tuned annually.bizgate.nikkei.com

2-2 Updating the Outer Wall = Monaka

The number of ridges on the mold was increased from 10 to 12 to 14, balancing strength and ease of breaking. Furthermore, from 2023, the ratio of domestic rice flour was increased by 25%, enhancing aroma and thickness.

3 Baking Process Changing by the Second

The dough is controlled at 0.05-second intervals in the oven temperature, producing 500,000 pieces non-stop per day. During the interview, an engineer explained, "Lowering the tunnel oven by 0.3°C changes the texture the next morning." By passing through a -35°C rapid cooling tunnel just before shipping, the crispiness is maintained even within the domestic distribution network. Including logistics in the design is the Morinaga way.note.com

4 The Impact of the Free Distribution Event of 25,000 Pieces in Asakusa

In March 2025, a promotion distributing 25,000 pieces over two days at Sensoji Temple in Tokyo's Asakusa recorded 18 million impressions on X (formerly Twitter). The sight of foreign tourists lining up was featured in overseas news, and sales in the metropolitan area soared by 1.5 times the following week.shitakoe.com

5 The Japanese Convenience Store Network Supporting the "Seconds Sale Model"

Japanese convenience stores have frozen cases that maintain a temperature of around −20 ℃ with a temperature range of ±1 ℃. Morinaga has established a system to deliver nationwide by 3 a.m. on the store release day and calculated the optimal defrosting time through hundreds of verifications. This is why the experience of "cracking crisply whenever you buy" is guaranteed.bizgate.nikkei.com

6 Challenge Towards Sustainability

6-1 Plastic-Free Packaging and New Materials

From 2024, the film thickness will be reduced by 12%, and the ink will be switched to plant-based. The estimated annual CO₂ emissions will be reduced by 800 tons.

6-2 Experimenting with Plant-Based Chocolate

Amidst the instability of cocoa procurement due to global warming, prototypes of "plant-based chocolate shells" using pea protein and carrageenan are underway. They are tackling the triple challenges of taste, gloss, and brittleness.

7 Reasons Why Overseas Expansion is Not Easy

There are barriers such as frozen logistics costs, tariffs, religious ingredient regulations, and the fact that "even the same rice flour has a different aroma depending on the origin." It is difficult to reproduce the "same texture as the Japanese version" with local production. As a result, the rarity value of "only available in Japan" remains.japantimes.co.jp

8 Guide for "Jumbo Experience" for Inbound Tourists

1. Time to Buy – Convenience stores are restocked just after 2-5 p.m.

2. How to Break – Before the monaka softens from the heat of your hand, gently press the central groove for a beautiful split.

3. Arrangement – Put it in a hotel mug, sprinkle a free matcha tea bag for an instant Japanese-style parfait.

4. To Take Home – Buy a 100 yen cooling bag + ice pack at a drugstore to keep it crispy for two hours.
   
   

9 The Future—A Story That Continues Because It’s "Incomplete"

A Morinaga technician says, "The goal is to be told 'it's tastier than the 2025 version' five or ten years from now." The "incomplete marketing" that turns room for improvement into brand value functions precisely because Japan's food culture is mature.

At the same time, the excitement foreigners experience continues to be updated. By the time you visit again, the Choco Monaka Jumbo you know might be something entirely different.

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