For sauce production, qualify an MSG supplier against the factory's addition stage, process conditions and finished-product criteria. Begin with an identified sample and a written MSG addition trial. Keep the recipe and operating conditions controlled, record observations at defined times, and retain finished samples for the plant's quality review before approving a bulk order.
1. Describe the sauce process in the buying brief
Fufeng lists soy sauce, oyster sauce and seasoning sauces among MSG applications on its official product page. Select the addition method and particle specification through the factory's formulation and process review.
State whether the candidate is intended for an existing sauce or a new development, and identify the formulation revision. Describe the equipment and the point at which MSG would be introduced. If you are replacing a currently approved material, explain whether the objective is a supplier substitution, packing change or revised particle specification.
Request a sample linked to the proposed product specification and available batch documentation. Ask the supplier to confirm the offered particle distribution where relevant. Do not choose a size solely from a photograph or assume that a named mesh grade is available. Keep sample identity, technical approval and the commercial quotation connected by a common reference.
2. Agree the MSG addition trial before running it
Have the formulation and process teams select the conditions using the factory's established development procedure. Record recipe quantities, liquid composition, vessel, batch size, temperature profile, mixing settings, addition sequence and the point at which timing begins.
Choose a narrow comparison. For a supplier substitution, compare candidate and approved reference under matched conditions. For a proposed change in addition stage, keep the material constant while assessing that process change. Changing the source, particle specification and operating method simultaneously makes the result harder to interpret.
Define the observation method in advance. Record any visible undissolved material using the same sampling and inspection procedure for each run, but do not treat a visual check as a quantitative dissolution test. If the process requires a measured endpoint, quality should choose a suitable validated method for that particular sauce matrix.
3. Capture a time-linked process record
Use one trial record for each run and label every collected sample. Note deviations when they occur, including changes in addition rate, mixer interruptions or adjustments to the process. A later recollection of the run is less useful than a record tied to an identified stage and time.
| Stage | Fields to record | Review purpose |
|---|---|---|
| Before addition | Formula revision, material code, vessel, batch quantity and actual process conditions | Establish a comparable starting point |
| During addition | Start and end time, addition method, mixing settings and operator interventions | Identify what happened while material entered the process |
| Defined observation points | Sample code, collection time, location and agreed inspection or analytical result | Compare the candidate and reference consistently |
| Process completion | Actual end conditions, finished-sample codes and any unresolved observation | Connect the process record to finished-product review |
| Review and retention | Acceptance decision, reviewer, retained-sample location and scheduled checks | Keep the evidence available for the final decision |
Agree the observation points before testing rather than selecting only favourable moments afterward. If a sample is unavailable or a condition falls outside the trial plan, mark that limitation. Decide whether the remaining evidence answers the original question or whether a targeted repeat is necessary.
4. Assess the finished sauce within the approved scope
Apply the plant's existing finished-product criteria and use coded comparison samples where a sensory review is appropriate. Keep serving or evaluation conditions consistent and record the decision method. Avoid replacing a defined review with a single informal tasting comment.
Where normal product development includes holding or shelf-life assessment, retain trial samples under the established programme. An acceptable immediate result does not by itself approve a different shelf life or predict later performance. Record which checks are complete and which remain pending, and keep those statuses visible to purchasing.
Investigate an unexpected result without assuming MSG is its only cause. Check the recipe revision, other ingredients, sample identity and recorded process deviations. If an adjustment is proposed, document it as a new trial condition. Do not merge the results of materially different runs into a single approval statement.
5. Translate the accepted trial into the purchase request
Identify the accepted sample and specification revision, the sauce applications covered and any process conditions attached to approval. Include the required packing and how it will be handled at the factory. Ask for confirmation of the proposed grade and packing combination rather than assuming a general product listing covers the specific order.