Batch Details

The batch detail view shows everything recorded during a single roast: the full curve, key temperatures, weight data, and any notes. Open it by clicking a row in the Batches list or in the history table inside a plan.

Batch detail screen in Rostoc

Stats

At the top you’ll see the key numbers from this roast: how much coffee went in and came out (and the weight loss percentage between them), the charge and drop temperatures, and the timing of each development phase — dry end, first crack, and the roast’s duration. The DTR (Development Time Ratio) tells you what percentage of the roast happened after first crack; roasters use it as a shorthand for how developed the coffee is likely to taste.

Duration runs from Charge to Drop. A roast with no Charge marked shows ”—” and asks you to mark Charge and Drop on the chart: click the chart at the moment and pick the milestone. A roast you stopped without marking Drop gets a Drop at its last reading, which you can move the same way.

If the batch was roasted against a plan, the plan name is shown here as a link back to it. A roast imported from Artisan or Cropster is marked imported beside its name, and keeps the name and date the file gave it.

Curve

Below the stats, the temperature chart shows time on the x-axis and all connected sensor channels on the y-axis. Key events (charge, turning point, dry end, first crack, drop) are marked as vertical lines on the chart.

If the batch was roasted against a plan that has a reference curve, the reference overlay appears in a muted colour so you can compare your actual roast against the target.

To look closer at any part of the roast, pinch on a trackpad or hold Ctrl (Cmd on a Mac) and scroll; drag the plot to move around it, and Reset zoom brings the whole roast back. See Zoom the Roast Chart.

Change or remove a control value

A gas, airflow, drum speed or damper value you typed can be corrected on the chart — a 156 % that should have been 15 %, say. Hover the control’s line in the lower chart: a handle shows on each value you typed. Click it, and the chart’s menu opens on that value, for example Gas 156 %:

Change value — type the right value and press Enter, or click Save. The line redraws with the new value.
Remove — the value goes, and the line steps back to the one before it. Remove every value of a control and its line leaves the chart.

A gas or airflow value above 100 % is asked about first: “Gas 120 % is above 100 %. Record it anyway?” Pressing Enter again does not record it; click Record 120 % if you meant it. Until it is corrected, a value above 100 % is drawn at the top edge of the chart under a marker that carries its real value.

Only the values you typed can be changed. A value the Machine reported, a change Rostoc sent to the Machine, and the Reference Curve stay as they were recorded. Where the Machine reports a control itself, its line stands in for the values you typed, and those cannot be clicked.

A correction changes that control’s line and nothing else: the weights, milestones, DTR, temperatures and events stay as they were. The JSON export carries the corrected value. You can also correct a value during the roast, in Roast Studio.

Roaster and notes

Below the chart you’ll see the Roaster name — the person who ran the roast, if recorded — and a Notes section with any post-roast observations. If a roast colour was measured, a Colour field sits alongside them.

If the machine brand and model were captured, a Machine Info section shows them at the bottom of the page.

Edit a batch

Edit batch is the primary button in the page header, beside the … menu.

You’ll usually reach it straight from the roast. When a recording finishes, the Batch Created confirmation leads with Review batch, which opens this page with the edit dialog already open. Rostoc fills the output weight in from your plan where it can, so this is the moment to enter what the scale says. The confirmation clears after a few seconds; if it has gone, open the batch and click Edit batch.

The dialog holds the roast record:

Output Weight — what came out, weighed
Colour Reading and Colour Scale — a roast colour measured after the roast, on the Agtron or Colortrack scale
Notes — post-roast observations
Roaster Name — the operator who ran the roast, not the Machine

An output weight above the charge weight is refused with “Output weight can’t exceed the charge weight”, a negative one is refused too, and an entry that is not a number stops the save instead of clearing the weight already saved.

Charge and drop temperature cannot be edited. They are recorded from the roast itself and shown on the page under Thermal milestones. Weight Loss % is worked out from the input and output weights and appears under Roast Weights.

Adjust green coffee and inventory

Green coffee is not in the edit dialog. Adjust green & inventory, at the bottom of it, opens a second dialog that owns everything the roast took out of stock:

the Roasting Plan the batch is filed under
Input Weight — what the roast consumed
the batch composition, with each Coffee Line and its percentage in a blend
the Lot each component drew from
a Reason for the correction

These sit apart because changing any of them moves stock. The dialog shows the inventory change it is about to make before you save, and records your reason against the stock movement.

If the batch consumed stock from a Lot, the batch page shows it under Green Coffee, as Inventory consumption.

Set as reference curve

If the batch belongs to a Roasting Plan, a star icon appears in the page header, leading the button cluster with Edit batch and the … menu.

Click the star to set this batch as the plan’s Reference Curve.
Click it again to remove it as the reference.

The star is amber when this batch is the current reference, and grey otherwise. It follows the batch rather than the route you took: a roast made from a plan shows the star whether you opened it from that plan’s history table or from the Batches list. A batch with no plan has no star.

Click the … button in the corner of the Curve card and choose Share chart. The Share Roast dialog opens with a preview of the image, and checkboxes to include or hide the Reference curve overlay and the Actions markers. Click Export PNG to save the image — it comes out with Rostoc branding, ready to post or send to a customer.

Export the data

Open the … menu at the right end of the page header and choose Export as CSV or Export as JSON, to download the roast’s full data table instead of an image — useful for opening in a spreadsheet or feeding into another tool. Export as .alog gives a roast file that profile-design tools import, with the temperatures, milestones and weights only.

Both formats carry the roast’s record — batch code, roast name, Machine, Roasting Plan, green coffee and Lot, roaster name, input and output weight, weight loss, colour, duration from Charge to Drop, milestones and notes — and every channel your machine recorded: bean and environment temperature, gas, airflow, drum speed, whatever your setup reports. CSV is the one a spreadsheet opens directly, with the record at the top and the curve below it. JSON also keeps any control changes you made and your timed comments on one timeline with the milestones. The download starts immediately, and the file is named after the roast.

See Export Your Data for the other ways to get your roasting data out of Rostoc.

Delete a batch

Click Edit batch in the page header, then Delete Batch at the bottom-left of the dialog. A confirmation step appears before anything is removed.

Deleting a batch permanently removes its curve data. The Plan it was linked to keeps its targets. If the batch is a Plan’s Reference Curve, the confirmation says so: the Plan is left without a reference until you set another.