HarryM

The production of coffee bloom is an essential element of fresh ground coffee when infused with 92c water.

When you pour/infuse 92c water over freshly ground coffee, you'll begin to see the ground coffee come alive especially when you stir the grounds around in the water a little; you should notice a lovely fizz effect on top like a volcano erupting which is created by Co2 from the beans and it's this which gives the 'bloom' of the coffee. If you see little to none, you know ...