**KitchenAid’s grinding attachments aren’t a good choice for making smooth peanut butter.**

- **Food grinder:** It can grind nuts, but KitchenAid describes the result as mealy. Expect ground peanuts; don’t count on it producing a smooth, spreadable butter. [KitchenAid’s food-grinder guidance](https://producthelp.kitchenaid.com/Countertop_Appliances/Stand_Mixer_Attachments/Grinders/Food_Grinder/Tips_for_the_Food_Grinder).
- **Grain mill:** **Do not use it for peanuts.** KitchenAid explicitly warns that their high oil content can damage the grinding mechanism. [KitchenAid’s grain-mill manual](https://www.kitchenaid.com/content/dam/global/documents/201003/owners-manual-W10250966-RevB.pdf).
- **Food processor attachment:** This attachment slices, shreds and juliennes; it lacks the bowl and multipurpose blade needed to repeatedly process nuts into butter. [Attachment features](https://www.kitchenaid.com/countertop-appliances/stand-mixers/attachments/p.food-processor-attachment.KSM1FPA.html).

The hopper machine at your merchant is likely a dedicated **nut-butter mill**, designed to turn oily nuts into a paste. Machines of that kind are made specifically for shops selling freshly ground peanut butter. [Nut-butter mill manufacturer](https://nutbuttermill.com.au/wp-content/uploads/Nut-Butter-Mill-Catalogue_B.pdf).

For home use, choose a **standalone food processor rated for nut butter**. Add roasted, shelled peanuts and process until smooth, stopping to scrape the bowl as needed and following its operating limits. KitchenAid provides instructions for that method. [Making peanut butter in a food processor](https://www.kitchenaid.ca/en_ca/blog/o/peanut-butter-food-processor.html).