lattelover wrote:The reviews of the Vario indicate there is very little residual left, and one had photos with the top burr removed, to show the absence of residual. It seems to me that for Vario to do what it promises as far as switching between coarse and fine, that it can't leave ANY residual grind behind. So if it actually does that, does that mean it's unique as far as that attribute?
The Vario is unique in that it retains little grounds shot-to-shot, but it's not difficult to sweep the chute of other grinders as necessary if you're willing to remove the finger guard (see
This paintbrush is the best $1.25 I've spent on my grinder,
How to Tame a Messy Mazzer Doser, and
Improving Mazzer doser efficiency for examples of "can do" workarounds). Keep in mind that the larger grinders we're talking about (Mazzer, Compak, etc.) are commercial grinders designed for coffee houses. Holding back 2 to 4 grams in the chute is inconsequential for cafe usage.
In my opinion, retained grounds isn't the main issue with dual duty grinders, it's preserving the espresso grind setting. For a given coffee, determining the exact espresso grind setting is quite important. If you've "dialed it in" to the millimeter, changing it to make a French press means the next espresso pour will be slightly off compared to the previous one, even if you mark the espresso setting. Even if I could purge all coffee residuals from grinder X, I still prefer a
dedicated espresso grinder so time and coffee I've invested in dialing in the setting isn't lost. Since brewed coffee is generally less demanding on grinders, I would use a less expensive grinder for that purpose (e.g., a refurbished Solis Maestro, manual grinder, etc.).
Of course I speak of what's ideal. If space or funds are the main issue, then a dual duty grinder like the Baratza Vario or any other top grinder with a cheap brush works for me.