Think of par levels like the gas gauge in your car - they tell you exactly when to refuel before you're stranded. Without this system, you'll order too much (cash tied up in inventory) or too little (sold out during service). A properly set par level keeps your operation running smoothly while maintaining healthy cashflow.
What is a par level system?
A par level represents the minimum quantity of each ingredient you must keep in stock. Once your inventory drops below this threshold, you automatically reorder. It prevents mid-service stockouts while avoiding excessive cash tied up in slow-moving inventory.
💡 Example:
You use an average of 5 kg of salmon per week. Your supplier delivers 2x per week.
- Weekly usage: 5 kg
- Per delivery: 2.5 kg
- Safety buffer: 1 kg
Salmon par level: 3.5 kg
Calculate your usage per ingredient
Start with your 10 most critical ingredients. Track exactly how much you use weekly. Monitor this over at least 3 weeks to establish an accurate average. Seasonal shifts and special promotions can dramatically impact your usage patterns.
- Count every delivery you consume (not what you purchase)
- Document spoilage and waste amounts
- Identify peak periods (weekends, events)
- Calculate daily usage averages
Determine your delivery frequency
Your supplier's delivery schedule determines how long inventory must last between orders. Fresh products (fish, meat) require different cycles than shelf-stable items (rice, pasta).
💡 Example delivery cycle:
- Fish/meat: daily or every other day
- Vegetables: 2-3x per week
- Dry goods: 1x per week
- Beverages: 1-2x per month
Add a safety buffer
Always include 20-30% extra for unexpected rushes or delayed deliveries. This buffer prevents stockouts during busy evenings. For perishables, keep buffers smaller to minimize waste.
⚠️ Watch out:
Oversized buffers drain cash. €1000 in excess inventory means €1000 less in your bank account. Balance security with cashflow needs.
Set maximum inventory
Beyond minimum levels (par), you need maximums too. This prevents over-ordering and excessive cash tie-up. Maximums depend on storage capacity, shelf life, and available capital - a pattern we see repeatedly in restaurant financials where operators struggle with inventory bloat.
- Fresh products: maximum 3-5 days inventory
- Refrigerated products: maximum 1-2 weeks inventory
- Dry goods: maximum 2-4 weeks inventory
- Beverages: maximum 1-2 months inventory
Monitor and adjust
Par levels aren't permanent fixtures. Review monthly to ensure they still make sense. Menu changes? Sales growth? Your par levels need updating too. Seasonal fluctuations also require regular adjustments.
💡 Example adjustment:
Summer: more salads and fish, fewer stews
Winter: more warm dishes, fewer cold appetizers
Adjust par levels seasonally to prevent waste.
Digital vs manual tracking
You can manage par levels on paper, in Excel, or through apps. Digital systems offer immediate visibility into ordering needs and trend analysis. Tools like KitchenNmbrs automatically calculate par levels based on your recipes and sales data.
How do you set a par level? (step by step)
Measure your weekly usage
Count for 3 weeks how much of each main ingredient you use. Divide by 3 for your average weekly usage. Also note how much you throw away due to spoilage.
Calculate par level per ingredient
Formula: (Weekly usage / 7 days) × Days between deliveries × 1.25 (safety buffer). For fresh products use factor 1.2, for shelf-stable products 1.3.
Test and refine your system
Start with your 10 most important ingredients. Check after 2 weeks: do you run out of inventory or have too much? Adjust your par levels until it works.
✨ Pro tip
Begin with par levels for just your 5 most expensive proteins and track them for exactly 2 weeks. This focused approach delivers immediate cashflow improvements without overwhelming your team.
Calculate this yourself?
In the KitchenNmbrs app you can do this in just a few clicks. 7 days free, no credit card.
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Frequently asked questions
How often should I check my par levels?
Review monthly to ensure par levels remain accurate. Menu changes or seasonal shifts require immediate adjustments. Sales growth also demands higher par levels.
What if I frequently run out despite having par levels?
Your par level's set too low or you're experiencing unexpected demand spikes. Increase your safety buffer from 25% to 30-35% and verify delivery frequency meets your needs.
Can I establish par levels without historical data?
Start with estimates based on recipes and projected sales. Calculate weekly requirements and add a 30% buffer. Refine using actual data after 2-3 weeks of operation.
How much inventory value is normal for restaurants?
Standard range is 3-8% of monthly sales in inventory value. With €50,000 monthly sales, you'd maintain €1,500-4,000 in inventory. Exceeding 10% ties up excessive capital.
Should I set par levels for every single ingredient?
Focus on your top 20% most expensive ingredients - they represent 80% of your costs. Prioritize meat, fish, cheese, and alcohol. Add spices and garnishes later.
How do I handle par levels for seasonal menu items?
Create separate par levels for seasonal ingredients that activate only during specific months. This prevents ordering summer produce in winter or vice versa.
What's the difference between par levels and reorder points?
Par levels indicate minimum stock quantities, while reorder points trigger actual purchases. Reorder points are typically set slightly above par levels to account for delivery lead times.
📚 Sources consulted
- EU Verordening 852/2004 — Levensmiddelenhygiëne (2004) — Official source
- EU Verordening 853/2004 — Hygiënevoorschriften voor levensmiddelen van dierlijke oorsprong (2004) — Official source
- EU Verordening 1169/2011 — Voedselinformatie aan consumenten (2011) — Official source
- NVWA — Hygiënecode voor de horeca (2024) — Official source
- NVWA — Allergenen in voedsel (2024) — Official source
- Codex Alimentarius — International Food Standards (2024) — Official source
- FSA — Safer food, better business (HACCP) (2024) — Official source
- BVL — Lebensmittelhygiene (HACCP) (2024) — Official source
- Warenwetbesluit Bereiding en behandeling van levensmiddelen (2024) — Official source
- WHO — Foodborne diseases estimates (2024) — Official source
Food Standards Agency (FSA) — https://www.food.gov.uk
The HACCP standards shown in this application are for informational purposes only. KitchenNmbrs does not guarantee that displayed values are current or complete. Always consult the FSA or your local authority for the latest regulations.
Written by
Jeffrey Smit
Founder & CEO of KitchenNmbrs
Jeffrey Smit built KitchenNmbrs from 8 years of hands-on experience as kitchen manager at 1NUL8 Group in Rotterdam. His mission: give every restaurant owner control over food cost.
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