If you grind coffee every morning and spices once a week, look at what the manufacturer allows in the grinding chamber. A blade grinder with a compatible spice bowl can share its motor. A burr grinder designed for roasted coffee beans is not interchangeable with that setup, even if a peppercorn fits through the hopper.
Two real machines that illustrate the difference
KitchenAid documents a spice-grinder accessory, BCGSGA, for its BCG111 and BCG211 blade coffee grinders. The accessory includes small stainless-steel spice bowls with their own blades and lids. You change the bowl, so the surfaces that touched cumin need not touch tomorrow’s coffee. Check the model on your base before buying loose bowls: KitchenAid names those two compatible models.
Baratza’s U.S. warranty describes grinding whole roasted coffee beans as the intended use of its grinders. Owning a capable espresso grinder is therefore a reason to keep a separate spice mill, not a reason to try spices in the burrs. Cleaning instructions are not permission to grind other ingredients.
| Your priority | What to choose or check |
|---|---|
| Repeatable changes between coffee grind settings | A coffee burr grinder with settings suited to your brew method; keep spices out unless its own manual expressly permits them. |
| One motor for dry spices and occasional coffee | A model with documented interchangeable spice and coffee bowls. Confirm the accessory is actually included in the listing. |
| One fixed bowl already used for strong spices | Make it the spice grinder if avoiding aroma transfer matters to you. |
| Wet ingredients, pastes or nuts | Look up that ingredient in the model’s manual. Approval for dry spices does not establish approval for a paste. |
What to inspect on a secondhand grinder
Ask for a photo of the model plate and of the bowl with the lid removed. A listing labeled “coffee and spice” does not tell you which bowl you are getting, whether the matching lid is present, or whether the bowl can be detached from the motor. For the KitchenAid combination, price the missing parts before comparing it with two separate appliances. For a coffee-only burr model, judge the purchase on the coffee you make; there is no second job to count toward its value.
For the broader comparison, see How to Choose a Coffee Grinder .
Sources
KitchenAid accessory compatibility and parts diagram · KitchenAid instructions for grinding spices · Baratza intended use and US warranty