Multipurpose Workstation for Jams and Preserves: How It Works and Why to Chose It.
Anyone producing jams and preserves on an artisanal or semi-industrial scale knows the limits of traditional cooking in open pots or bain-marie well. The Multipurpose Workstation was created precisely to overcome these limits, combining cooking, concentration, candying, and heat treatment of the packaged jar into a single system, with parameters traceable batch by batch.
The limits of traditional jam cooking
Cooking fruit in open pots requires long times, because heat is transmitted only from the bottom and the temperature is not uniform throughout the mass. This exposes the product to two concrete risks:
- Sugar crystallization, when the boiling point is reached irregularly and locally;
- Inconsistency in the finished product, with some areas more cooked than others and less consistent color and aroma retention from one batch to the next.
On top of this, an operator must manually follow every stage — stirring, checking density, transferring — lengthening production times and making standardization between batches difficult, a problem when volumes grow or when working for large-scale retail distribution.
How the Multipurpose Workstation Manages Cooking and Concentration
The Multipurpose Workstation addresses these limits with a stainless steel tank equipped with a thermal liquid jacket and scraper blades, which distribute heat evenly across the entire mass and keep the product constantly in motion, preventing it from sticking to the bottom or burning locally.
Vacuum cooking is the real strength for jams and preserves: by lowering the pressure, the product boils at a lower temperature than cooking at atmospheric pressure, preserving the color, aroma, and vitamins of the fruit that would otherwise be lost with prolonged high-temperature cooking. The vacuum concentration phase then allows the desired density to be reached by reducing water content without having to extend cooking times, with a direct impact on the organoleptic quality of the finished product. The same system also handles candying, for those who process candied fruit alongside preserves.
Critical Parameters to Monitor
To achieve a consistent result batch after batch, several parameters need to be set and monitored precisely:
- Cooking temperature, adjustable according to the type of fruit and the desired degree of concentration;
- Process time, saved in the recipe to ensure repeatability from one batch to the next;
- Pasteurization of the packaged jar, with time and temperature parameters specific to the product’s pH, to ensure food safety and adequate shelf life without compromising texture and flavor.
The Multipurpose Workstation’s touchscreen allows these parameters to be set once and recalled for every production run, eliminating variability linked to individual operator sensitivity.
Production Advantages for Jam and Preserve Maker Using the Multipurpose Workstation
The independent double tanks allow two batches to be managed in parallel —cooking and pasteurization at the same time — increasing production capacity without the need for additional machines. Recipes saved in the system reduce startup times for each production run and make it easier to bring new operators up to speed.
An increasingly relevant aspect, especially for exporters, is traceability: the digital recording of the parameters of each cycle, exportable via USB, documents compliance with the heat treatments required by food regulations and simplifies the management of inspections, even in foreign markets with stricter documentation requirements.
Speaking of regulations: those producing jams and preserves for sale must also comply with the labeling and composition requirements set out by the new EU Breakfast Directive 2024/1438, transposed into Italian law by Legislative Decree 207/2025.
For a complete overview of how the multi-function bench works and all the processes it handless, see Multipurpose Workstation : The Complete Guide to Food Processing.
Why choose the Coveser Multipurpose Workstation
If production varies throughout the year, the Multipurpose Workstation proves to be the most effective answer: a single plant capable of adapting to different processes, without changing the production workflow or having to invest in additional machines.
The Coveser Multipurpose Workstation brings together vacuum cooking, concentration, candying, and sterilization/pasteurization in a single machine. A solution designed for those who want to grow in volume without sacrificing the artisanal quality of the product.
What production capacity does the Multipurpose Workstation have?
The Coveser multifunction unit is available in different models depending on customer needs. It features either a single tank or independent double tanks. The two tanks can work in parallel — for example, two different recipes, or two different stages of the same product — increasing output without the need for additional machines.
What heating options are available?
The machine is available in steam or electric versions, allowing it to adapt to the energy resources already available on-site and optimize operating costs.
Is the Multipurpose Workstation suitable for small labs, or only for industrial production?
It is designed for a wide range of settings: artisanal labs, small food industries, and R&D departments. The ability to save recipes and recall them for every production run makes it suitable even for businesses without a dedicated technical team, since it eliminates the variability tied to individual operator sensitivity.
How much does a Coveser Multipurpose Workstation cost?
The price varies depending on the configuration (tank capacity, heating type, requested options). For a customized quote based on your production volumes, you can request a quote directly from the product page or contact the Coveser team for a free consultation.
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To find out which configuration best suits your volumes and products.
