My Coffee FAQs

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Grounded in your beans, shots & equipment

Technique

If my shot is brewing in 26 seconds for a 38 ish yield, should I grind slightly finer still to try to slow the shot down a bit more and get more crema?

Your 26s shot at 1:2.1 ratio is actually in a good range—you don't necessarily need to go finer. However, if you want more body and crema, a slightly finer grind (grind 28→27) could extend the brew to 28–30s and improve sweetness, though the Ándale at 18 days is still developing and may respond better to waiting a few more days. Your rating dropped from 4→3→2 as you over-extracted with higher ratios, so I'd dial back to the 1:2.1 that scored highest rather than chase finer grinds.

For lighter roasts of the same variety, should I grind coarser or finer

Grind finer for lighter roasts. Lighter roasts are denser and require finer grinding to achieve proper extraction, whereas darker roasts extract more easily so coarser grinds work well. Your Huila decaf (light, 6d) at grind 27 pulled a solid 3/5 shot, so you're already on the right track—consider going slightly finer if extraction feels slow or the shot tastes sour.

Beans

For the most recent decaf I bought I know decaf tends to gas faster but the roaster recommends waiting 10 days to pull on a general message about their beans (decaf and not and many origins and does not indicate roast level) and that they tend to get better for 6 weeks after that. Which is the best timeline to follow

Follow the roaster's 10-day recommendation as your baseline, but prioritize your own taste results—your Blue Bottle Night Light Decaf shots at 27 days are rating 3/5, suggesting it may still be developing. Since decaf does degas faster than regular coffee, start pulling shots around day 10 and taste regularly; you'll likely find an optimal window between days 14–21 before it plateaus. Track your ratings to identify when this particular decaf peaks for your palate and machine.

For the printers row México decaf bag I just bought, what does it mean when it says washed, sun dried and water processed? What would be the peak brewing times for a coffee of those characteristics

That's actually describing three processing steps for the same coffee: the cherries were washed (removing fruit), sun-dried (drying the bean), and water-processed (likely referring to the Swiss Water decaffeination method). Mexican washed coffees typically peak 2–3 weeks post-roast, so your Mexico Huatusco at 34 days is past its prime—aim to use it within the next few days. Look for a slightly faster pull (25–28s) compared to your naturals, as washed coffees usually extract more readily.

For a decaf, what does it mean when it says washed, sun dried and water processed? What would be the peak brewing times for a coffee of those characteristics

These refer to processing methods that remove the caffeine and affect flavor: washed (cleanest, brightest cup), sun-dried (fruitier, more body), and water-processed (balanced, retains origin character). Your Metric Decaf Huila Pink Bourbon is EA-washed, which typically peaks 2–3 weeks post-roast; you're at 19 days, so you're in the ideal window. Expect faster extractions (22–28s) with this processing due to increased porosity—your recent 26–27s shots align well with this profile.

I have two new bags of active beans that have 0 shots pulled. They are both too fresh. I could continue to pull decaf shots for a few days but if I had to open and start pulling from one of the new bags, which one would be best to pull from early?

Open the Printer's Row Brazil Cerrado first—it's only 7 days from roast and natural processed beans typically develop sweetness and body faster than washed coffees, making them more forgiving at younger ages. The Metric Decaf Huila Pink Bourbon at 12 days is actually in a better window than both new bags, so stick with it for a few more days if possible, but if forced to choose between your fresh beans, the natural process Brazil will give you better results sooner.

Equipment

If I am not using my grinder for two weeks is it necessary to clean it before I stop using it or is it ok to just run a few doses of coffee when I am using it again and clean the next scheduled time

It's best to purge your Encore ESP Pro before a two-week break by running a few doses of fresh beans through it—this clears out old grounds that can become stale and affect flavor when you return. You don't need a deep clean before storage, but do a full cleaning on your next scheduled maintenance to remove any oil buildup that accumulates during use.

how often is it recommended to clean my grinder

Clean your Baratza Encore ESP Pro every 2–4 weeks of regular use, or sooner if you notice static, clumping, or taste degradation. For espresso grinding, consider a more frequent purge (running a few grams of beans through between bean switches) to clear old grounds, especially when rotating between your Metric and Luckycat beans.

Science

Does caffeine level change based on extraction ratio, say a ristretto vs espresso vs lingo

Caffeine content is primarily determined by bean mass and type, not extraction ratio. A ristretto (1:1.5) uses less water but extracts similar caffeine per gram of coffee, while a lungo (1:2.5+) uses more water and extracts slightly more total caffeine—but the difference is modest. Your Unicorn Blood at 1:1.5 vs 1:2.3 would have similar caffeine per shot despite the different ratios; the lungo would have marginally more.

What happens when a bean is past its peak

As beans age past their peak (typically 2–4 weeks post-roast), they lose CO₂ and aromatic compounds, resulting in flat, muted flavors and reduced sweetness. Extraction becomes inconsistent because stale beans are less soluble—you may see faster flow rates and thinner body even with the same grind. Your Cerrado at 14d and Ándale at 11d are still in the sweet spot, but your Mexico Huatusco at 34d likely shows diminished complexity and brightness compared to when it was fresher.