Neutral:
+/- With my mortar of the floor is approximately conical, I saw only negative, but in use this proved to be very helpful, because the mortar is very easy to rotate, but it is definitely too much
- / + Granite abrasion, this is normal and can not be prevented, also is not bad or unhealthy. Minerals the body needs also ;-p
+/- Granite is a natural product, such blemishes prevent small holes and chipping can not be in the processing
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Cons:
- My ram could be a bit quiet round down
- When the upper end of the plunger would have been rounded off, you could also use it for plungers finer things, bad
- The floor is also quite rough, which can cause scratches quickly
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I am very pleased with the kitchen gadgets, the workmanship is very good, looks nice and does its job conscientiously and reliably. From herbs, pesto on through to nut butter, the mortar helps me a lot when crushing and squeezing the ingredients.
What more do you want.
Only the rough and uneven ground, as well as something to just guessed plunger (lower curve) is to be criticized.