Kaesid Case Study: How a London Ramen Shop Increased Profits by 30% with a Commercial Oden Cooker

In the fiercely competitive London food scene, standing out requires more than just great recipes—it demands operational excellence. For ramen shops, where broth is king and consistency is critical, the difference between profit and loss often comes down to kitchen efficiency.

This case study examines how "Umami Rams," a modest 28-seat ramen shop in London's Soho district, transformed its operations and boosted profitability by 30% within six months of installing a Kaesid Commercial Oden Cooker. What began as a search for better broth management evolved into a complete front-of-house revolution that increased table turnover, reduced waste, and created new revenue streams.

The Challenge: Consistency Issues and Bottlenecks

When brothers Takumi and Hiroshi Sato opened Umami Rams in 2021, they brought their grandmother's Hakata-style tonkotsu recipe from Fukuoka. The food earned rave reviews, but by early 2025, the business was struggling with challenges familiar to many growing restaurants.

Inconsistent Broth Quality: The restaurant relied on stovetop stockpots to keep their signature pork broth simmering. However, during peak hours, staff would crank the heat for faster service, causing the broth to boil. This degraded the collagen and clouded the flavor profile that regular customers expected . As Takumi noted, "Our broth is the soul of our ramen. When it's inconsistent, we're serving something less than authentic."

Limited Stovetop Capacity: With only six burners, the kitchen constantly juggled broth maintenance, tare preparation, chashu braising, and vegetable blanching. During Friday night rushes, tickets backed up, and table turns stretched beyond 90 minutes—far longer than the 45-minute target needed for profitability in Soho's high-rent district.

High Energy Waste: Keeping multiple large stockpots at a rolling simmer throughout service consumed enormous gas, contributing to utility bills that ate into already-thin margins.

Missed Opportunities: The Satos wanted to introduce traditional Japanese oden—a comforting winter dish featuring fish cakes, daikon, and tofu simmered in dashi—but lacked the dedicated cooking space. "Oden requires gentle, all-day simmering," Hiroshi explained. "Our current setup couldn't handle another pot."

The Solution: Kaesid Commercial Oden Cooker

After researching options, the Satos discovered the Kaesid Commercial Oden Cooker—a specialized piece of equipment designed precisely for gentle, multi-compartment simmering. Unlike standard stovetop cooking, this unit features:

• Divided Compartments: Nine individual bins allow different ingredients to cook simultaneously without flavor transfer, each maintained at optimal temperature

• Precise Thermostatic Control: Maintains temperatures within ±1°C, ensuring broth never reaches a damaging boil

• Energy-Efficient Insulation: Advanced insulation reduces heat loss, cutting energy consumption by 40% compared to stovetop methods

• Space-Saving Design: Compact footprint frees up stovetop space for high-heat cooking

Takumi was initially skeptical. "I thought specialized equipment was an expense, not an investment. But after seeing Kaesid's numbers, we realized this could pay for itself within months."

Implementation: More Than Just Oden

The Satos installed the Kaesid Oden Cooker in March 2025. While intended primarily for oden, its impact extended far beyond the new menu item.

1. Perfect Broth, Every Batch

The cooker's precise temperature control transformed broth management. The signature tonkotsu now simmers gently at exactly 90°C for 18 hours, never boiling, never breaking. "The flavor depth improved within the first week," Takumi reported. "Customers who'd been coming for years commented that the broth tasted richer, more like our early days when we had time to watch every pot."

2. Streamlined Mise en Place

The divided compartments became essential prep stations:

• Compartment 1: Signature tonkotsu broth

• Compartment 2: Shiitake dashi for vegetarian options

• Compartments 3-5: Simmering eggs, chashu, and bamboo shoots

• Compartments 6-9: Traditional oden ingredients

This organization eliminated the chaos of juggling multiple stovetop pots. Staff could now prepare complete bowls from a single cooking station, reducing pickup times by 40%.

3. The Oden Revelation

Oden launched as a limited winter special. The response exceeded all expectations. Within two weeks, oden accounted for 25% of evening orders. The dish required no additional labor—ingredients simmered unattended throughout service, and staff simply plated them to order.

"The oden cooker became our secret weapon," Hiroshi noted. "Tourists wanted to photograph it. Regulars developed favorite ingredient combinations. We accidentally created a destination dish."

Financial Results: The 30% Profit Increase

By September 2025, six months post-installation, Umami Rams' financial picture had transformed:

How the 30% Materialized:

• Increased Table Turns: Faster kitchen output reduced dinner service from 4 hours to 3 hours while serving more customers. Friday night covers increased from 80 to 120.

• Energy Savings: The insulated Kaesid unit consumed 40% less gas than the previous stovetop method, saving approximately £720 monthly.

• Reduced Waste: Precise temperature control eliminated scorched batches. Ingredients kept at ideal temperatures stayed fresh throughout service, reducing end-of-night discard by 50%.

• New Revenue Stream: Oden alone generated £4,500 monthly at 75% food cost margin—pure profit beyond ingredient costs.

• Labor Efficiency: With broth and oden requiring minimal attention, kitchen staff focused on high-value tasks, reducing overtime costs by 15%.

Beyond the Numbers: Intangible Benefits

The Kaesid investment yielded benefits beyond the spreadsheet:

Staff Satisfaction: "Before, I worried about broth boiling over during rushes," said head chef Yuki Tanaka. "Now I trust the equipment. I sleep better, and my team works better."

Customer Experience: Online reviews mentioning "consistent flavor" increased by 200%. One regular wrote: "Umami Rams tastes exactly the same every visit—that's harder to find than you'd think."

Menu Flexibility: With stovetop capacity freed, the Satos introduced monthly specials like spicy miso ramen and seasonal vegetable bowls, keeping the menu fresh without additional equipment.

Lessons for Restaurant Owners

The Umami Rams case offers actionable insights for commercial kitchen operators:

1. Match Equipment to Technique: Traditional Western equipment often fails Asian cooking methods requiring precise, gentle heating. Specialized tools like oden cookers aren't luxuries—they're solutions to specific operational challenges.

2. Calculate Total ROI: Beyond the purchase price, factor in energy savings, waste reduction, labor efficiency, and new revenue potential. The Kaesid unit paid for itself in four months through operational savings alone.

3. Leverage Versatility: Even specialized equipment often finds unexpected uses. The oden cooker's compartments now support multiple menu categories, proving its value year-round.

4. Trust the Specialists: As Takumi reflected, "We spent two years fighting our kitchen limitations. Six months with the right equipment, and we're finally running the restaurant we envisioned."

Conclusion

For Umami Rams, the Kaesid Commercial Oden Cooker wasn't merely a new appliance—it was the catalyst for comprehensive operational improvement. By solving the fundamental challenge of gentle, consistent simmering, it unlocked faster service, better food quality, lower costs, and entirely new menu possibilities.

The 30% profit increase tells only part of the story. The Satos regained something equally valuable: the confidence that every bowl leaving their kitchen honors their grandmother's recipe. In the high-stakes world of London dining, that consistency is the ultimate competitive advantage.

Ready to transform your kitchen efficiency? Explore Kaesid's complete line of commercial cooking equipment, including the Oden Cooker featured in this case study. Contact our team for a personalized ROI consultation.