The most common and most likely answer to this crossword clue is the 6 letter word CHICHA
C
H
I
C
H
A
More clues leading to the result CHICHA
Buddy explains!

The straight part
We know that "Maize liquor" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case maize liquor = chicha.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does CHICHA mean?
CHICHA noun- A fermented beverage from South and Central America, most commonly made from maize, grapes or apples.
- A genre of popular Peruvian music related to cumbia and native Peruvian huayno.