Consistency at volume, and why wholesale demands it

Why this craft drifts

Reduction concentrates everything: salt, acid, sugar and heat. Two batches reduced for the same length of time on different days have different final volumes, so they have different concentrations of all four. Time is the variable makers control and it is the wrong one.

Reduce to a target, not a clock

Finish on a measured endpoint rather than a duration: a final weight, a final volume, or a refractometer reading if the formulation suits one. Weight is the cheapest and most reliable of the three, and a batch sheet that records starting weight and finished weight turns reduction from a judgment into a measurement.

Ingredients vary more than the method does

Tomatoes and peppers are agricultural and their water content and sugar move through the season. A formulation fixed by weight on August produce behaves differently on October produce, which is a reason to record what you bought and from whom alongside the batch.

What a buyer will ask

Whether it tastes the same in March as it did in September, and whether you can make the same thing again in the quantity they want. Both are answered by the batch record rather than by reassurance, and a maker who can show the endpoint numbers across a season is in a different conversation from one who cannot.

Fix the formulation in weights, not in volumes

A recipe in cups is a recipe that varies with how somebody packs a cup, and in a reduced product that variation compounds. Weights are reproducible by a different person on a different day, which is the actual requirement once you are not the only one making it. Convert the formulation once, early, before there is a filed process written around the volumetric version.

The same applies to the acid. Buy it to a stated strength and record that strength, because a change of supplier can move the acidity of an unchanged recipe.

References