Place 1¾ cups coarse-ground
coffee in a 2-quart pitcher.
Add 3½ cups cold water and
stir to combine. Cover with
plastic wrap and let steep at room
temperature for at least 12 hours
or up to one day.
Line a fine-mesh strainer
with a standard coffee
filter and fit it over a
wide-mouth jar or pitcher.
Slowly pour coffee into filter until
all liquid has passed through.
Discard filter and grounds.
Cover coffee and
refrigerate until completely
chilled, at least 2 hours
or up to 5 days. For each
cup of iced coffee, dilute the
concentrate with an equal portion
of milk, half-and-half or water,
and top with ice. If you want to
sweeten the deal, try a little simple
syrup (combine equal parts water
and sugar, bring to a boil and
cool); it blends better than sugar
in cold drinks. For hot coffee, start
with one part concentrate to 2 to
3 parts boiling water per mug.