Pair a $5,000 chromed-out Italian espresso machine with old or poorly ground coffee, and your ristretto will taste mediocre — or worse, like a cup of salty battery acid. But invest in a good manual ...
Grind size can be the difference in a delicious or an unpleasant, bitter cup of coffee. Learn why grind size matters and which setting you should be using for your coffee at home. Taylor Martin CNET ...