GROCERY LIST
by Kiran Kedlaya

answer: SKIM MILK

Each of the clues defines a conjured two-word phrase with a particular
cryptogram pattern:

drug guar
idol lord
yoga agio
trip pier
mead date
herb brae
tron noir
mort trio
tref fear
tahr rhea
sham math
help plie
seat tape
aeon note
trog goer
real lane

In each pair, three of the four letters from the first word are reused
in the second word in a particular order. Take the unique letter from
the first word and the second word in each pair, and read these in
order: DA IR YI TE MT HA TI MI TA TE ST HI SP AT TE RN or DAIRY ITEM
THAT IMITATES THIS PATTERN

The answer is the dairy item with the same cryptogram pattern as the
clue answers, namely SKIM MILK.