Spoiler, its RDT
In case people do nto know what RDT is, which they really should if they have been into coffee for a little while as it makes a big difference:
RDT is Ross Droplet Technique, which is very much adding water to beans. Named after David Ross who came up with it back in 2005
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I wouldn’t trust that to tell me anything I didn’t already know the answer to, it is fucking useless as it still makes too many mistakes and lies about them