פירוש על שבת 148:1

Who minces beets: the text is with a letter mem and not a samech, as explained in (chapter) Ha'Or Ve'Harotev (Chullin 120a) what is Kippah? Firma (with a mem). Mincier in Old French, cut it fine.

One who minces beets: Grinding applies specifically with beets, but other foods are permitted [to be minced].

Who chops chips: thin woods to ignite a fire.

If he's particular on the measurement: to cut them by measure.

Cutting: [like] The hides that he cuts bu measure.