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Method 3: The SEBAmyl Two-Rest

Two rests, a hundred minutes each, no boil and no transfer. The thickest mash of the four at 1.25 L/kg, and the most straightforward to run on a single vessel.
Where this comes from

This is one of four mash methods Bard's documented in 2018 while adapting its production process to homebrew scale, run on a Robobrew — a recirculating single-vessel electric system (why that equipment class matters). These are working notes from real sessions, not a validated homebrew protocol. Values are starting points; the scale-translation warnings apply to all four.

The run sheet​

#StepTargetTimeAdditions
1Mash in163.4°F—Sorghum malt at 1.25 L/kg; 20 mL Termamyl SC DS in the foundation water
2Liquefaction rest163.4°F100 min—
3Cool145°F—Cool water addition
4Conversion rest145°F100 minTermamyl + SEBAmyl L
5Set pH——Drop to 5.4
6Run off——Vorlauf, sparge, lauter

Target extract: 15.0°P (1.061).

What makes this one different​

No boil, no transfer. Everything happens in one vessel at two temperatures. On a recirculating system that's close to push-button, and it's the method to start with if you're running this process for the first time.

A thick mash. 1.25 L/kg is roughly half the water of Method 1 — which concentrates the wort toward the 15°P target but makes stirring and heat distribution harder. Recirculation matters more here than anywhere.

163.4°F, not 190°F. This liquefies well below the production baseline, trading temperature for time — two 100-minute rests instead of a hot fast hold. Whether that costs anything in extract or beer quality is an open question.

Watch for​

Mash thickness at 1.25 L/kg — if your pump struggles, thin it and record that you did; temperature stratification in a thick bed; and the total clock, which is over three and a half hours of rests before you even sparge.

Report back​

Nobody has published results for this method at homebrew scale — which means your batch is data. Report efficiency, mash behavior, runoff, gravity against the 15.0°P target, fermentation, and what you'd change. See Research Ask #3 and tell us what happened.