Process & product GUIDE 14
Ajvar and vegetable roasting lines: Connecting preparation, texture and filling
Plan an ajvar line by connecting vegetable roasting, skin removal, target texture and filling. Use real product and package samples to define scope.
Planning an ajvar line requires the roasting section and final product preparation to be assessed as connected but distinct duties. Vegetable reception, washing, roasting, subsequent handling, texture development and filling must form a defined route. FRUMAK describes washing, flame treatment and further washing in its roasting line, with optional skin removal. The intended ajvar texture and package then establish requirements for downstream processing. Representative vegetables and finished product samples provide the most practical starting point.
An ajvar investment is not complete simply because the equipment can roast peppers. The product intended for the jar also has a defined texture, preparation method and packaging requirement. An enquiry should describe that finished target alongside the line name.
FRUMAK's ajvar page discusses the processing of roasted peppers and aubergines into a spread. Its roasting page describes vegetable preparation as a separate process. Reading the two together helps establish the boundaries of the proposed investment.

Describe the range of incoming vegetables
State the vegetables to be used and their condition on arrival. Size and shape variation should be visible in the project information because feeding and preparation duties need assessment. Starting only with a finished jar can hide the handling work required before processing begins.
Use samples that represent the expected supply range rather than a single selected vegetable. Include the distribution of deliveries through the day as well as total intake. The preparation section can then be discussed against a realistic receiving and operating pattern.
Write down the roasting section's inlet and outlet conditions
FRUMAK describes vegetables being washed, treated through contact with flame and washed again. Skin removal is described as an optional subsequent step. A quotation using the term roasting line should therefore state precisely what condition of product it receives and hands over.
Clarify who performs any downstream handling and how removed skins or other separated material leave the area. Numerical processing conditions must be established through the actual product and process work. A general line description is not a ready-to-use production setting.

Describe ajvar texture more precisely than 'a thick spread'
Two ajvar products may have visibly different structures even when sold in the same market. Use a reference sample and the product development team's description. Connect size reduction and mixing duties to that target, particularly where visible pieces are intended to remain.
The equipment route from roasted vegetable to prepared mixture should be assessed with samples. Finding a sauce unit in a catalogue does not confirm that every ajvar structure can be achieved. The technical proposal should explain which duties will be examined during trials.
| Decision | Information to establish | Project consequence |
|---|---|---|
| Vegetable inlet | Type, size range and receiving condition | Feeding and preparation scope |
| Roasting outlet | Skin removal and subsequent handling | Section boundaries and side streams |
| Finished texture | Reference product and particle expectations | Size reduction and mixing trials |
| Packaging | Jar, closure and filling quantity | Filling and closing assessment |
Bring jars into the discussion early
Provide the actual jar and closure, including the intended filling quantity. FRUMAK states that its volumetric filling option can handle particulate products while the flowmeter option is not suitable for them. The actual structure of the ajvar must still be assessed within that distinction.
Where small and large jars will run on the same day, prepare a changeover scenario. Ask which settings and parts change and where the product will be during the transition. A broad filling range in a catalogue is not a complete format-change plan.
Follow one product through the complete acceptance trial
Testing sections separately is useful, but the product should also be followed through the connected route. Define observations for the roasted vegetables, prepared mixture and filled package. Link all samples to their batches and assess them against the same finished product target.
Include cleaning access, side-stream removal, operator space and utility connections in the quotation questions. These details do not replace the recipe; they make the proposed route workable in the building. Vegetable samples, a finished reference product and real jars should therefore be sent together.
KEY POINTS
Before requesting a quotation
- Specify the condition of the roasting section's output.
- Use a reference sample to describe the intended ajvar texture.
- Plan vegetable preparation, side streams and jar changes together.
QUESTIONS AND ANSWERS
Frequently asked questions
Are a roasting line and an ajvar line the same?+
Roasting is one part of vegetable preparation. An ajvar project also needs the downstream processing, mixture preparation and filling duties to be assessed. State the boundaries of both scopes.
Is skin removal always included?+
FRUMAK describes skin removal as optional. If required, confirm it explicitly in the quotation scope and in the agreed roasting-section outlet condition.
What helps define the required ajvar texture?+
A representative finished sample, a description of visible particle expectations and the actual package are useful. General terms such as thick or fine cannot establish processing suitability alone.
Sources and product information
The following pages document product specifications and equipment scope. Capacity, product suitability and the final supply scope need to be agreed in a project-specific proposal.
Editorial principles

