How does roast level affect espresso brewing ratios?

Question

My espresso roast level experimentation is under progress. I want to know how I can modify the brewing ratios according to the roast level.

Answer 1

On the contrary, lighter roasts have longer brewing ratios in comparison to the darker roasts. The explanation for this is quite simple; the darker roasts are more soluble. This is in accordance with the data coming from surveys where on average lighter roasts may be brewed using a 3:1 ratio but dark roasts do in many cases go down to a 1:1 ratio.

Comments

I had difficulty filling out the survey because it assumes that each person only pulls one shot style. I fluctuate between 18 second 1:3 turbos, blooming shots that take a full minute, boomer shots with a medium roast for milk drinks, etc. I use different recipes for different beans, different drinks, and just how I'm feeling that day!

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Since I lost my job nearly 4 years ago, and have had a terrible time finding new work, I’ve spent a good amount of time getting into coffee. Though without work, my expense on things like a good grinder, scales, has been tough to justify. Use a scoop, flatten it out, get my water by volume, do what I need to do. I think I’ve had decent coffee this way, but I’d love to have a good scale and do it better. Gonna enter, wish me luck.

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As a home brewer I will also optimize for flavor and play around with brew times, especially if I like the coffee and plan on buying it again. I do this over the life of the bag sometimes and take notes. What you didn't take into account was that the preference among home brewers was a medium roast and after years of home experimentation I think medium roasts generally taste best around that 30 second brew time. Whereas I imagine the pros are messing around with a much wider array of roast profiles and origins.