The spent water can be concentrated to a caffeine content of from about 7 to {TAIL ~ about 30%} by {HEAD ~ weight} 
The spent water can be concentrated to a caffeine content of from about 7 to { TAIL ~ about 30 % } by { HEAD ~ weight }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD