What a production day actually looks like
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The order
- Weigh and prep everything before any heat goes on.
- Cook, then acidify to the specification and confirm it.
- Hold at the fill temperature.
- Fill, de-air, re-check headspace, wipe rims, cap.
- Process, cool undisturbed, check seals, label.
Where the time goes
Reduction and holding. A thick sauce takes as long as it takes to get thick, and that time does not shrink by buying a bigger canner. The canner waits on the kettle, which is the opposite of what people plan for.
The second drain is prep: everything that gets chopped is per-unit labor that scales exactly with volume, and it happens before anything is hot.
Acidify before you fill, and verify before you fill
Confirming the acidity after the jars are capped means a failed batch is a batch of filled jars rather than a pot you can correct. The measurement on the finished settled product is still the one that counts, but a check in the kettle is what stops you filling 80 jars of something that was never going to pass.
Finish what you start
Do not hold a part-finished batch overnight to fill tomorrow. A cooked, acidified, unprocessed sauce sitting warm is the worst state the product is ever in, and the temptation arrives exactly when a day has run long.
Size the day to the kettle
The right size for a production day is what you can cook, hold, fill and process without the tail of the run going in cool. That number is set by the kettle and by how many hands are on the filling, and it is usually smaller than people plan for in a first season. Two clean days beat one long one, and the long one is where the fill temperature slips and the rim wipe gets skipped.
Write the day down afterwards: what you made, what it took, and where it stalled. The second season is planned from that rather than from memory.