Perfecting Coffee Preparation, Better Brewing Methods to Reduce Tooth Stains

Siphon Coffee Brewing
Below is a table outlining the staining capacities of various popular coffee brewing methods. There haven't been any studies directly quantifying staining with different coffee brews, but I was able to compile this information using a bunch of different research that looked at concentrations of other coffee compounds that correlate well with concentrations of staining compounds. 

Type of Brew Water to Bean Ratio (by weight) Grind Size Extraction Time Water Temperature (°F) Staining Concentration
Turkish 9.46 Powder <5 min 160 Most
Espresso 4.28 Fine 25 s 202  
Siphon 14.42 Finer than Drip 3 min 202  
Pour Over 14.82 Sand 2.5 min 200  
Chemex 14.79 Medium 4 min 200  
French Press 14.71 Coarse 4 min 195-200  
Cupping 16.08 Coarse 4 min 202-205  
Cafe Solo 23.78 Coarse 4 min 200  
Percolator 31.57 Coarse 5 min 195-200  
Cold Brew 3.00 Coarse 10-12 hrs Cold Least

About the author

Scott Frey is a reknown Orthodontist, professional speaker, and founder of the More than Smiles Movement. Follow him on Twitter.

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