Batch/Filter Brewer Operation
Standard procedure for brewing drip/filter coffee in volume on an automatic batch brewer, from dosing through holding in a thermal server. Applies to high-volume filter coffee service, not single-cup pour-over.
~5 min setup + one brew cycle per manufacturer spec (typically 6-12 min depending on batch size)
- Confirm the batch brewer is descaled and within its maintenance schedule; check the brew basket and spray head for cleanliness and even flow.
- If using a paper filter, rinse it with hot water and discard the rinse water to remove paper taste before dosing.
- Pre-warm the thermal server with hot water and discard it before use; never brew directly into a room-temperature or cold server.
- Confirm fresh, filtered water is connected to the brewer and the reservoir is at the correct level.
- Confirm the grinder is set to the batch/filter brew setting, not left on an espresso or pour-over setting.
- Dose ground coffee at a ratio of approximately 60 g per litre of finished brewed coffee (roughly 1:16 to 1:17).
- Weighed on a scale for the specific batch size being brewed, not scooped by volume.
- Use a grind size suited to batch/filter brewing - coarser than espresso, close to or slightly finer than standard pour-over, per the grinder's batch brew setting.
- Confirmed against the grind reference chart or a recent extraction check, not by feel alone.
- Load the dosed grounds evenly into the brew basket, level the bed, and confirm the basket seats correctly under the spray head before starting the cycle.
- Bed checked visually for an even, flat surface with no gaps or channels at the basket walls.
- Start the brew cycle and confirm water is dispersing evenly across the full bed within the first 30 seconds; do not walk away from the first cycle after any maintenance.
- Visually confirmed even saturation across the full bed surface, not just the centre.
- As soon as the cycle finishes, transfer the brewed coffee into the pre-warmed thermal server (never a hot plate or direct burner) and seal it.
- Brewed volume checked against the expected yield for the dose used, before sealing the server.
- Label the server with the brew time and start a discard timer of approximately 2 hours from brewing.
- Label written and timer set immediately after sealing, not estimated later from memory.
- Taste a sample within the first few minutes for balance; flat/watery or harsh/bitter results point to a ratio or grind drift.
- If a refractometer is available, confirm TDS falls within the standard filter coffee range (roughly 1.15-1.35%); adjust ratio or grind if it consistently sits outside that range.
- Confirm the server keeps the coffee hot enough for service throughout the discard window, and discard/rebrew once the timer expires regardless of remaining volume.
Batch brewer ratios and cycle times vary by machine model - always confirm against the manufacturer's spec sheet and adjust this SOP's ratio/grind accordingly rather than treating 60 g/L as universal. Holding coffee on a hot plate or direct burner accelerates bitter, burnt flavor development and is not an acceptable substitute for a thermal server. The ~2 hour discard window protects flavor quality and is the same reference figure used elsewhere in this toolkit for held brewed coffee.