title_body: How do I bloom coffee in a large percolator hopper?
upvoted_answer: You would bloom a large percolator the same way you would bloom in a pour over. Of course, there are different ideas about how to bloom for pour over.
  From the website Hand Ground:
  
  Use a 1:1 coffee-to-water ratio for the bloom
  &quot;Bloom the heck out of the coffee&quot; with a 2:1 ratio
  Stir the bloom
  DON’T stir the bloom
  
  To bloom coffee in your percolator go through your normal routine except you will be adding less water. If you are using a 1:1 bloom subtract the mass of the coffee from the water you add to the reservoir. If you are using a 2:1 bloom, subtract twice the mass. Once you've added the coffee you will bloom it by pouring hot water evenly over the grounds. Because a percolator won't fit nicely on many scales, measure out your hot water first; this is probably easiest achieved by pouring into a pitcher on a scale until you've attained the equivalent mass of the coffee (or double). After pouring into the grounds, wait a minute. If you want to stir, stir. This might be a good idea because you are working with much more coffee than a standard pour over.