Eaglepath wrote:...My theory is that a somewhat concentrated brew is better for the reason that it seem to jump start the stomache in someway. But zero evidence for that.
How about a concentrated brew being more intensely absorbed by the lining tissues in the mouth, mucous membranes and throat (and stomach walls?). Depends on how much one flushes after drinking brew, but if there is no flush (I drank always aya without an after flushing shot, yuk) then there can be slight partial absorption before it gets assimilated by the digestive system deep down.
Often had a two stage trippy feeling. One that quickly came after the drink say 30 mins after drink making me think ohh it's already started. Than a milder plateau that indicate the real session had not started yet. Then after 1 to 2 hours the real session which is another ball game.
If my suspicion is correct then a more concentrated brew might lead to a more profound first stage.