Brewing experiment: How low can you go?

I've often wondered how much influence one can have on the fermentability of wort using the mash temperature. Most beers are mashed at 67°C/152°F, it is an all-around mashing temperature. But sometimes I've seen people state that they mashed on the high side 69°C/156°F or on the low side 65°C/149°F and I've wondered: Does a … Continue reading Brewing experiment: How low can you go?

Photos from brewing the “Neck Tat that says Evil” black IPA

Michael Dawson created this recipe and published it in his book "The Mashmaker". It can also be found online here. The black color comes from cold-steeping dehusked roasted grains. The original recipe uses Perla Negra. I substituted for Weyermann Carafa Special I since it matches in °L. As far as I know, both malts were … Continue reading Photos from brewing the “Neck Tat that says Evil” black IPA

Comparison of the DS18B20 and PT100 temperature sensors

I've been collecting sensor logs from different CraftBeerPi3 users. Here is a plot of the temperature sensor signal from two different systems plotted together. One uses the ds18b20 one wire sensor and the other uses a PT100 sensor. The PT100 signal is much more noisy. It makes sense, the signal the pt100 measures is very … Continue reading Comparison of the DS18B20 and PT100 temperature sensors