Also, what is the ratio of coffee to water for cold brew?
A ratio of 1:8 of coffee to water will produce a nice coffee ready to drink after around 24 hours at a coarse grind. Another option is to create a much stronger cold brew (named cold brew concentrate), by using a ratio anywhere from 1 part coffee to 4 parts water, up to around 1 part coffee to 2 parts water.
Also, does it matter what coffee you use for cold brew? When you're trying to choose the best coffee for cold brew, may be wondering what roast should you opt for; light, medium, or dark roast. The truth of the matter is, it is all really based on personal preference because there isn't a “best coffee type for cold brew.”
Beside above, does cold brew use more coffee?
The words first worm their way into my brain when I measure out the beans for a recipe. To put it bluntly, cold brew is a bean hog, demanding twice the amount of grounds (and often more) than your typical batch of hot-brewed coffee.
Can you brew the same coffee twice?
Reusing the same coffee grounds twice a day is one thing, but waiting for a whole day or more is probably not a good idea. If you're dumping and thoroughly drying the grounds between uses, you'll probably find the moist, soggy coffee grounds are an ideal breeding ground for bacteria, fungi, and even molds.