Percolation is a focused online course that explores the science and technique behind pour-over and drip coffee methods, including V60, Chemex, Kalita Wave, and batch brewers. Learn about grind size, flow rate, water chemistry, agitation, and extraction control to achieve clarity, balance, and sweetness in every cup. Ideal for baristas, brewers, and coffee lovers aiming to elevate their manual brewing skills with scientific accuracy.