Secret to stronger pour-over coffee with no extra beans unlocked by scientists

Pouring water slowly, steadily and from height is key to achieving ‘avalanche’ mixing effect

While slow pouring increases contact time, the team found that at low heights the velocity of the water was too low to dig into and disturb the bed of particles. Picture: iStock/PA

Forget expensive beans and pricey filters – if you want a stronger cup of pour-over coffee, just add water slowly, steadily and from a height, researchers say.

While there are myriad ways to make coffee – from moka pots to cafetieres and barista-style machines – pour-over coffee is an everyday staple for many. Now scientists say they have discovered how to make a stronger cup using the same quantity of ground coffee.