Today's Cup: Sumatra Mandheling Grade 1 Toba

This Sumatran was very tangy, a feature I didn't terribly enjoy --although I came to get used to it but the end of the pot:-) I attribute this to the roast profile, which entirely eliminates the 3rd stage.

Yesterday I published the roast curve for Preset 1. I also like the roast curve that Sweet Maria's uses:

Stage	Temp	Duration
Stage 1	350F	2:00
Stage 2	400F	3:00
Stage 3	460F	4:30
Total		9:00

Here's the rub: with 1/2 cup, I end up shortening the roast so that I never get into stage 3 at all (neither with Sweet Maria's roast curve nor preset 1). So I think I need to come up with a roast curve for 1/2 cup that shortens the middle stages so that I can get into the last stage.