What We Learned from Testing Native Pea Starch in an Onion Ring Application

When consumers bite into a battered or breaded product, they expect one thing: crunch.

What they don't see is everything the coating survived to get there. Mixing, coating, par-frying, freezing, transport, storage, and final prep all put pressure on texture, adhesion, and appearance. For formulators, the goal isn't a crispy coating in the lab. It's a coating system that performs consistently at commercial scale.

That's where starch comes in.

Why Starch Matters in Batter & Breading Systems

In coated foods, starch isn't just a filler. It shapes the performance characteristics that matter most:

• Coating structure and batter viscosity
• Pickup and adhesion
• Texture and crunch
• Frying performance, yield, and frying loss
• Finished product appearance

No coating system runs under perfect conditions. Substrate moisture, line speed, shear, temperature, and frying and freezing conditions all vary. When performance drifts, manufacturers see lower yield, more waste, inconsistent quality, and customer complaints. Formulators need starches that hold up through the entire process.

Why Native Pea Starch?

Native pea starch has drawn growing interest because it combines functionality with broader formulation and sourcing goals. Formulators often evaluate it for:

• Crisp texture and coating structure
• Binding, adhesion, and consistent pickup
• A clean-label, native alternative to modified starch systems
• An upcycled ingredient, made from the starch-rich part of the pea left over after protein extraction
• Additional domestic sourcing options

It also comes from one of agriculture's most efficient crops. Peas fix nitrogen, reducing the need for synthetic fertilizer and strengthening crop rotations. PURIS sources peas from North American farmers and manufactures starch domestically, giving customers a traceable ingredient that supports supply diversification.

But ingredient benefits only matter if they show up in real-world performance. So we put it to the test.

The Test

PURIS evaluated native pea starch in a battered, breaded onion ring system designed to reflect commercial processing: batter coating, breading, par-frying, IQF, and final fry.

Native pea starch was tested at 25%, 50%, and 100% inclusion against a modified corn starch control. Rather than testing functionality in isolation, we looked at how it performed across the complete coating system.

What We Found

At supported inclusion levels:

• Batter pickup was similar to the modified corn starch control
• Breading pickup was comparable or better
• Net frying loss was generally comparable or better
• Crunch increased with the 100% pea starch treatment
• No pea-related off-flavors were identified

The 25% treatment behaved most like the control in batter viscosity, while the 100% treatment produced the most noticeable increase in crunch. Together, the results suggest native pea starch can be a valuable tool when texture, pickup, and yield are key objectives.

Why Application Testing Matters

Ingredient performance doesn't automatically carry over from one application to another. Onion rings behave differently than poultry, seafood, vegetables, appetizers, or plant-based foods. This trial shows how native pea starch can perform in a commercial-style coating system, and it's a starting point for further evaluation, not the final answer. Every substrate, process, and formulation should be validated independently.

Ready to Evaluate Pea Starch in Your Coating System?

The best way to know if native pea starch belongs in your batter or breading is to test it in your own formulation. Whether you want to improve crunch, optimize pickup, move to a native starch, or diversify sourcing, the PURIS applications team can design a trial around your product and process.

Request a sample, review the onion ring trial results, or connect with our technical team to get started.