Gastronorm Food Pans
In the heart of every well-run professional kitchen — from intimate boutique venues to bustling six-star hotel banquets — Gastronorm (GN) pans serve as the quiet foundation of efficiency, safety, and seamless service. These modular stainless steel or polycarbonate containers allow your team to prepare, cook, store, transport, and present food without unnecessary transfers, minimising handling while maximising every centimetre of oven, fridge, steam table, or buffet space. Their standardised fractional sizing system, built around the iconic GN 1/1 (530 × 325 mm), ensures perfect compatibility across all equipment brands, reducing waste, speeding up operations, and supporting strict HACCP compliance through better temperature control and reduced cross-contamination risks. Whether holding vibrant mise en place, keeping dishes at precise serving temperatures, or enabling smooth front-of-house presentation, investing in quality GN pans is one of the smartest decisions you can make for your kitchen’s productivity and your guests’ satisfaction. This comprehensive buying guide explores their practical use cases, the clever logic behind their dimensions, material choices that suit every operation, and the best practices that keep your food safe and your team confident.
Gastronorm (GN) Steam / Food Pans Buying Guide
Gastronorm pans (also called GN pans, hotel pans, or steam table pans) are the universal standard for food containers in professional kitchens worldwide, including Australia. They are rectangular, modular trays designed for maximum efficiency in commercial food service.
Use Cases
GN pans are incredibly versatile and used at every stage of the food journey in restaurants, hotels, catering operations, hospitals, schools, and bakeries. Their primary roles include:
- Preparation (mise en place): Holding chopped ingredients, sauces, or batters on prep stations.
- Cooking: Directly in combi-ovens, convection ovens, steamers, or bain-maries (they withstand high heat when made of the right material).
- Hot holding / serving: In steam tables, chafing dishes, or buffet lines to keep food at safe serving temperatures.
- Cold storage: In fridges, freezers, or blast chillers for ingredients or finished dishes.
- Transport: From kitchen to service area or off-site catering (stackable and compatible with trolleys).
- Display: In self-serve buffets or deli counters.
The big advantage is interoperability: one pan moves seamlessly from oven → fridge → steam table → buffet without transferring food, reducing handling, waste, and contamination risk. Their modular design also saves space — they nest or stack neatly, which is essential in compact commercial kitchens.
Why the Sizing System Exists (and Why It’s So Specific)
Before the 1960s, every equipment manufacturer used their own tray sizes, so a pan from one brand often wouldn’t fit an oven or fridge from another. Swiss hotel associations solved this in 1964 by creating the Gastronorm (GN) standard, later formalised as European Norm EN 631. It became the global benchmark.
The system is built around one base “module”:
- GN 1/1 (full size) = 530 × 325 mm (external dimensions).
All other sizes are exact fractions or multiples of this base. This fractional logic lets you combine smaller pans to perfectly fill a larger slot (e.g., two GN 1/2 pans or three GN 1/3 pans fit exactly into one GN 1/1 space). It eliminates wasted space in ovens, fridges, and steam tables — every corner is used efficiently.
Standard GN sizes (external dimensions):
| GN Size | Dimensions (mm) | Typical Use Examples |
|---|---|---|
| GN 2/1 | 650 × 530 | Large bulk roasting, full oven shelves |
| GN 1/1 | 530 × 325 | Main dishes, bulk storage, buffets |
| GN 2/3 | 354 × 325 | Medium batches |
| GN 1/2 | 325 × 265 | Side dishes, sauces |
| GN 1/3 | 325 × 176 | Condiments, small prep |
| GN 1/4 | 265 × 162 | Garnishes, single portions |
| GN 1/6 | 176 × 162 | Small ingredients, sauces |
| GN 1/9 | 176 × 108 | Tiny portions or spice trays |
Depths (choose based on volume needed):
10 mm, 20 mm, 40 mm, 65 mm, 100 mm (most common), 150 mm, 200 mm. Deeper pans hold more volume but take up more vertical space in equipment.
This standardisation is why GN pans are so popular — they work with equipment from any brand.
Different Materials
Material choice depends on temperature, durability, weight, and budget. Here’s the breakdown:
- Stainless Steel (AISI 304 / 18/10 – the gold standard)
Most common for steam tables and hot use. Excellent corrosion resistance, oven-safe (up to ~400°C+), easy to clean, highly durable (5–10+ years).
Budget option: 201-grade stainless (cheaper but less corrosion-resistant and shorter lifespan).
Available in solid or perforated versions (holes for draining/steaming).
- Polycarbonate (clear plastic)
Lightweight, virtually unbreakable, transparent (easy to see contents), and ideal for cold storage/display (–40°C to +99°C). Not oven-safe. Great for fridges and buffets. Cheaper than steel.
- Polypropylene (PP) or Tritan
Similar to polycarbonate but often more affordable and BPA-free options available. Good for cold use and lighter duty.
- Other options
- Aluminium: Lightweight and excellent heat conductor, but can react with acidic foods and dents easily.
- Non-stick coated or enameled steel: For easy release of baked goods.
- Melamine: Decorative for display only (not for cooking).
Pro tip for buying: For heavy hot use, choose 304 stainless steel (0.8–1.0 mm thickness is ideal). For cold storage and display, go polycarbonate.
Best Practices for Food Safety & HACCP Compliance
GN pans are food-contact surfaces, so they play a critical role in your HACCP (Hazard Analysis and Critical Control Points) plan. In Australia, you must follow FSANZ Standards 3.2.2 (Food Safety Practices) and 3.2.3 (Food Premises and Equipment). Proper use prevents bacterial growth, cross-contamination, and foodborne illness.
Key best practices:
- Temperature control (Critical Control Point): Hot foods must stay above 60°C; cold foods below 5°C. Never use a GN pan to cool hot food rapidly — transfer to shallow pans and blast-chill if needed.
- Cleaning & sanitising: Clean immediately after use (don’t let food dry on). Use a commercial dishwasher or 3-compartment sink (wash → rinse → sanitise). Air-dry; never “wet nest” (stack wet pans). Sanitise to reduce microbes to safe levels.
- Labelling & traceability: Every pan must be clearly labelled with: contents, preparation date, use-by date, and staff initials. Use colour-coding (common HACCP system): red = raw meat, blue = seafood, green = vegetables, yellow = cooked meats, white/clear = dairy/ready-to-eat.
- Storage & handling: Store raw below cooked foods. Use FIFO (First In, First Out). Stack properly (use lugs on polycarbonate to prevent jamming). Inspect regularly for dents/cracks (these harbour bacteria — replace damaged pans).
- Avoid cross-contamination: Dedicated pans for allergens if possible. Never use the same pan for raw and ready-to-eat without full cleaning/sanitising.
- Material-specific rules: Only use oven-safe stainless steel for cooking. Keep polycarbonate away from high heat/ovens.
Following these practices not only keeps your kitchen HACCP-compliant but also extends the life of your pans and reduces food waste.
GN pans are a long-term investment that pays for itself through efficiency and safety. When buying, prioritise 304 stainless for heavy use and always verify “GN” or “EN 631” compliance on the spec sheet. If you need recommendations for specific brands, sizes, or lids/notched lids for steam tables, let me know! This is the first in the series — next guides can cover related equipment like lids, trolleys, or bain-maries.