I tried coffee extraction last night finally.
I ground up some fresh espresso blend beans in my mazzer mini. Just left the ground settings as I would normally grind for a double espresso. Filled up a glass 30ml bottle half way then filled with pg. Then I put on the cap, swished it around to fully saturate the grounds, then filled back up to the top with pg.
Microwaved for 10 seconds, then let sit in hot water for 20 minutes. Brought out a coffee filter to drain into a cup, then left it overnight since it dripped so slowly. In the morning, I quickly filtered it again in a less dense paper tea filter.
I ended up with 15ml of very dark coffee flavoring. It's completely opaque. It occurred to me that most people haven't used such a finely ground coffee. I hope it doesn't taste over extracted and bitter. I will try to mix a 5ml batch later tonight.
I ground up some fresh espresso blend beans in my mazzer mini. Just left the ground settings as I would normally grind for a double espresso. Filled up a glass 30ml bottle half way then filled with pg. Then I put on the cap, swished it around to fully saturate the grounds, then filled back up to the top with pg.
Microwaved for 10 seconds, then let sit in hot water for 20 minutes. Brought out a coffee filter to drain into a cup, then left it overnight since it dripped so slowly. In the morning, I quickly filtered it again in a less dense paper tea filter.
I ended up with 15ml of very dark coffee flavoring. It's completely opaque. It occurred to me that most people haven't used such a finely ground coffee. I hope it doesn't taste over extracted and bitter. I will try to mix a 5ml batch later tonight.