Jonathan and I talk about his impressive home brewing set up, day to day brewing and drinking, reviving siphon brewing, creating an app to analyze particle size distribution (PSD), probability densities, his upcoming book The Physics of Filter Coffee, applying soil research to brewing dynamics, hardcore data collection, being a filter coffee expert who's pulled only two shots, Scott Rao, and also a bit on Jonathan's post doc research on brown dwarfs and exoplanets.