Coffee Grounds
Coffee has ground type that suitable to your preferences. Each brewing method requires different sizes of coffee grounds.
Coffee machine use a fine coffee grind. A fine grind will be similar in size and feel to sugar. Fine grinds are required because of the short brew time that the coffee grind comes in contact with water. When brewing stovetop espresso, pressure builds up in the espresso maker which forces the water through the fine ground coffee.
Similar to coffee machines, moka pot also use a fine coffee grind. If the grind is just slightly finer or coarser, it can drastically affect the extracted coffee taste of the espresso. Which is why you must always use fine coffee grinds when brewing espresso in an espresso coffee machine or moka pot espresso maker.
For pour over coffee, the best grind to use is a medium grind.
A medium grind will be similar in size to a French press grind but less chunky and will feel slightly smoother. If you are using a cone-shaped pour over, then use a medium-fine coffee grind instead.
Since there are many different pour over brewers, each one will need a slightly different grind. You may need to experiment a bit more with this method until you find what tastes best for you.
Brewing coffee with a French Press requires a coarse, even grind.
A coarse ground will look somewhat chunky. Because the coffee is steeped in boiling water, the contact time between the water and coffee is much longer, which requires a coarser grind.
