+44 (0)1767 677515
info@dcnorris.com
October 8, 2026
Author: Annabel Norris, Marketing Manager
Modern industrial cooking systems give food manufacturers greater control over temperature,agitation, processing times, product quality and recipe consistency.
But even the most advanced equipment will only perform as well as the process behind it.
Through product trials, commissioning, operator training and ongoing process support, the DC Norris team sees first-hand how relatively small processing decisions can affect batch times, product quality and overall efficiency.
Here are five common mistakes and how manufacturers can avoid them.
Not every product should be heated in the same way.
Traditional steam-jacketed vessels remain highly effective for many applications, but relying solely on jacket heating isn’t necessarily the most efficient approach for every product or process.
For applications where rapid heating and effective mixing are important, technologies such as Jet Cook™ can provide an alternative approach, rapidly transferring heat into the product while simultaneously heating, mixing, and pumping.
The important consideration is the product itself, required temperature, batch size, viscosity, particulate integrity and target processing time. The heating method should be selected around the process rather than simply because it is how the product has always been cooked.
The lesson: Match the heating technology to the process, rather than making the process fit the equipment.
Agitation is about much more than keeping ingredients moving.
Agitator type and speed can influence heat transfer, ingredient incorporation, product texture and consistency. Running too slowly may result in inadequate mixing or uneven heating, while excessive agitation can negatively affect products containing delicate particulates.
Settings may also need to change during different stages of the same recipe. The optimum agitation during initial heating, for example, may not be appropriate once particulates or other sensitive ingredients have been added.
Understanding what is happening to the product at each stage allows operators to select settings based on the process rather than relying on one speed throughout.
Ingredient sequence can have a significant influence on the finished product.
Adding an ingredient too early, too late or missing a stage altogether can change how ingredients hydrate, disperse or react with one another. Temperature at the point of addition can be equally important.
In a busy production environment, experienced operators can sometimes develop their own way of doing things. Small deviations may initially appear insignificant but can introduce variation between operators, shifts and batches.
Clearly defined recipes and automated process stages can help ensure ingredients are added at the correct point every time.
Knowing the recipe isn’t necessarily the same as understanding the process.
Starch is a good example. Different starches respond differently to temperature, water, percentages, shear and processing time. Introducing starch at an inappropriate stage, applying the wrong level of agitation or using an unsuitable heating profile can affect hydration, viscosity and final product texture.
Similar considerations apply to gums, proteins, fats, powders and other functional ingredients.
This is one reason product trials can be so valuable. Testing ingredients under realistic processing conditions allows manufacturers to establish the optimum sequence, temperature, mixing and heating method before moving into full production.
During a customer trial in South Africa, the DC Norris team identified that inconsistencies in the customer’s finished product were not being caused by the equipment itself, but by the sequence in which ingredients were being added and processed.
The customer was producing sweet chilli sauce and experiencing significant variation in finished product viscosity from batch to batch. A review of the manufacturing process revealed that sugar was being added before the starch had fully hydrated. Because sugar absorbs available water very quickly, it was limiting the amount of free water available for starch activation, resulting in inconsistent thickening and a less predictable finished product.
Working with the customer, the team redesigned the process sequence. Water and starch were added first and heated to approximately 72°C to achieve around 90% starch activation before the sugar was introduced. This allowed the starch sufficient time to hydrate and develop the desired viscosity before competing ingredients were added.
The revised process delivered a far more consistent sauce and demonstrated how small adjustments to ingredient addition, heating profiles and agitation can significantly improve product quality.
Importantly, the new process was then built into the system’s recipe controls, ensuring the sequence could be repeated automatically in production rather than relying on individual operator judgement. The result was a robust, repeatable process capable of delivering an in-specification product batch after batch.
Key takeaway: Consistency isn’t achieved by running the same recipe every time. It’s achieved by having the flexibility and process control to adapt the recipe when product behaviour demands it.
Automation is designed to make a successful process repeatable.
Yet there can be a temptation for experienced operators to override automated stages, manually adjust settings or bypass recipe controls because they know the product.
The problem comes when different operators make different adjustments.
A Recipe Manager can control key parameters such as processing times, ingredient addition time, temperatures, agitation settings and processing stages, helping manufacturers reproduce an established process consistently across batches and shifts.
Automation doesn’t replace operator knowledge. Instead, it captures a successful process and helps make it repeatable.
DC Norris has seen this principle in practice. In one published trial, two operators following the same traditional curry recipe produced visibly different results because decisions such as onion softening and the amount of agitation were based on individual judgement. By moving to a defined Jet Cook™ and Recipe Management process, the cooking stages, temperatures and holding times could be controlled and recorded, creating a more repeatable process.
Many problems attributed to industrial cooking equipment aren’t necessarily equipment problems at all.
They can result from the interaction between the equipment, ingredients, recipe and operator.
That’s why DC Norris takes a process-led approach to industrial cooking systems. Customers can carry out trials in our Product Development Kitchens, test recipes using their own ingredients and work with our team to establish the most appropriate processing method.
That support continues through commissioning and hands-on operator training at the customer’s site — and can continue throughout the life of the system as recipes, operators and production requirements change.
“Getting the best from an industrial cooking systems isn’t just about reaching the right temperature. You need to understand how the product behaves throughout the process — when ingredients are added, how they’re mixed and how the heating method affects them. That’s often where relatively small changes can make a significant difference.”
[Stuart Rigby – Product & Process Manager]
The objective isn’t simply to automate a recipe.
It’s to understand the process well enough to make it efficient, consistent and repeatable.
