The most common and most likely answer to this crossword clue is the 5 letter word MILKY
I've seen this crossword clue in Independent
M
I
L
K
Y
More clues leading to the result MILKY
Buddy explains!

The straight part
We know that "Like a latte?" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case like a latte? = milky.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 MILKY mean?
MILKY adjective- Resembling milk in color, consistency, smell, etc.; consisting of milk.
- (color science) Of the black in an image, appearing as dark gray rather than black.
- (of a drink) Containing (an especially large amount of) milk.
- (of grains) Containing a whitish liquid, juicy.
- Cowardly.
- Immature, childish.
- Producing milk, lactating.