The most common and most likely answer to this crossword clue is the 7 letter word CANDLED
I've seen this crossword clue in Financial Times
C
A
N
D
L
E
D
Buddy explains!
The straight part
We know that "Tested the freshness" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case tested the freshness = candled.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 CANDLED mean?
CANDLED verb- To observe the growth of an embryo inside (an egg), using a bright light source.
- To dry greenware prior to beginning of the firing cycle, setting the kiln at 200° Celsius until all water is removed from the greenware.
- To check an item (such as an envelope) by holding it between a light source and the eye.