Decreasing Extraction with a Fixed TDS
You determine a shot is a touch too dry and bitter, and you want to reduce extraction but maintain your TDS.
You are brewing on an 18–40g ratio with a TDS of 9%.
18g dose
40g beverage weight at 9%TDS and 20% extraction yield
You increase the dose to 18.5g and you coarsen the grind (or decrease the temperature).