Meanings

refreshments (implied to be low-grade)

inferior goods

unpolished and uncut gem

rough

roughly

(rough) undercoat (of paint, plaster, etc.)

coarse

raw sugar

poor side dish

to handle (a thing) roughly

coarse (texture or grain)

poor

coarse salt

crushing up

bold and boorish

simple clothes

to treat shabbily

apologies for the crude food

the heat of food just after cooking

coarse-grained