The Influence of Inventory Management and Production Scheduling on the Timeliness of Product Completion of Ratsa Mama at Ratsa Kopi Café

Figure Ilustration AI

FORMOSA NEWS - Jakarta - Smart Inventory and Precise Scheduling Drive Cafe Speed, Study Finds. Combining structured inventory management with optimized production scheduling significantly increases product completion speed in coffee shop operations. The finding comes from a study conducted by researcher Muhammad Abdurrahman Achsan from Universitas Pancasila, published in September 2026 in the Journal of Finance and Business Digital. The study highlights how operational planning directly improves service delivery in small food and beverage businesses.

Operational Challenges in the Coffee Industry

The modern coffee shop industry faces intense competition centered on operational efficiency, order accuracy, and service speed. Customers expect quick preparation without sacrificing quality, making wait times a core factor in customer satisfaction. However, service delays regularly occur due to raw material shortages, disorganized workflows, unexpected demand spikes, and poor coordination between inventory holding and drink assembly. These disruptions increase operating expenses and harm customer loyalty. While large-scale manufacturing operations frequently utilize operations research to solve workflow issues, small food and beverage outlets serving perishable goods and specialty recipes often lack structured operational frameworks.

Measuring Cafe Workflow Metrics
To evaluate operational drivers, the researcher analyzed secondary operational data from Ratsa Kopi Café in Indonesia, focusing on its flagship beverage, "Ratsa Mama". This signature product requires an internal preparation process using homemade palm sugar syrup rather than standardized commercial sweeteners. The quantitative associative study examined 36 distinct operational production cycles logged between 2023 and 2025. Using IBM SPSS Statistics, the author evaluated two main factors through multiple linear regression analysis:

• Inventory Management: Measured via lead time management and safety stock levels for raw ingredients.
  
• Production Scheduling: Measured through processing time efficiency across preparation stages, including extraction, syrup mixing, milk steaming, and final assembly.
  

The primary target variable was the on-time completion rate of customer orders relative to the café's established service standards.

Key Research Findings
Statistical testing verified that both inventory control and production scheduling exert direct, positive, and statistically significant influences on order completion speed:

• Combined Operational Impact: Inventory management and production scheduling jointly account for 58.9% of the total variance in product completion timeliness (Adjusted $R^2 = 0.589$).
  
• Inventory Management Effect: Effective inventory control positively influences timely order completion ($t = 2.908, p = 0.020$). Maintaining optimal safety stocks prevents stockouts of critical homemade ingredients like palm sugar, avoiding workflow halts.
  
• Production Scheduling Effect: Optimized task scheduling significantly improves service timeliness ($t = 2.170, p = 0.010$). Systematic sequencing reduces idle barista time and clears bottlenecking during peak operational hours.
  
• Baseline Regression Model: The resulting linear regression formula ($Y = 95.931 + 3.255X_1 + 3.130X_2$) shows that proactive inventory practices ($\beta = 3.255$) and structured scheduling ($\beta = 3.130$) produce substantial gains in operational performance over baseline levels.
  

Real-World Impact and Industry Applications
These results provide actionable strategies for small and medium-sized enterprises (SMEs) operating in the service sector:

• Systematic Demand Forecasting: Small businesses should track supplier lead times and maintain dedicated safety stock levels for non-commercial, proprietary ingredients.
  
• Digital Point-of-Sale Integration: Adopting basic digital point-of-sale (POS) and inventory tracking software allows cafe managers to monitor stock thresholds in real time and schedule production tasks dynamically.
  
• Standardized Workflow Steps: Establishing fixed sequences for multi-step specialty beverages prevents congestion behind the counter during peak hours.
  
• Staff Skill Training: Training service personnel in systematic inventory monitoring and beverage sequence management builds operational resilience.
  

Author Profile
Muhammad Abdurrahman Achsan holds a degree in business administration and operations management. He is an academic researcher affiliated with Universitas Pancasila, Indonesia. His primary expertise covers operational management, supply chain optimization, inventory control, and service management in small and medium enterprises.

Source
Muhammad Abdurrahman Achsan. The Influence of Inventory Management and Production Scheduling on the Timeliness of Product Completion of Ratsa Mama at Ratsa Kopi Café. Journal of Finance and Business Digital (JFBD), Vol. 5, No. 3, Halaman 325–340
DOI : https://doi.org/10.55927/jfbd.v5i3.29
URL: https://journaljfbd.my.id/index.php/jfbd