I'm a specialty coffee roaster and I also brew all of our cold brew, at a previous job I made the recipe for our 400+ gallon batches on converted beer brewing equipment. Here's my actual recipe I'm currently using:
Does the hot water improve things? I've always done similar to corgi, with 225g of coarse ground beans in a 3l mason jar overnight, then filtered through a cheesecloth.
Definetly, but only if you're using a light roast coffee. It's called a "hot bloom". There are some compounds in the coffee that will only come out with hot water so you get a more complex final product. It's important that the water is only hot for less than a minute or it can come out bitter.
I'll have to give it a try then - how hot is hot? Boil the kettle and give it a minute like I do for hot coffee, or something more in the 70-80 degree range?
I'm a specialty coffee roaster and I also brew all of our cold brew, at a previous job I made the recipe for our 400+ gallon batches on converted beer brewing equipment. Here's my actual recipe I'm currently using:
Does the hot water improve things? I've always done similar to corgi, with 225g of coarse ground beans in a 3l mason jar overnight, then filtered through a cheesecloth.
Definetly, but only if you're using a light roast coffee. It's called a "hot bloom". There are some compounds in the coffee that will only come out with hot water so you get a more complex final product. It's important that the water is only hot for less than a minute or it can come out bitter.
I'll have to give it a try then - how hot is hot? Boil the kettle and give it a minute like I do for hot coffee, or something more in the 70-80 degree range?
Around 75-85 is perfect. If you go right off boil it's really easy to over extract.