The most common and most likely answer to this crossword clue is the 5 letter word NITRE
N
I
T
R
E
More clues leading to the result NITRE
- Fool about to produce gunpowder ingredient
- Preserving agent’s bulletin: it recommends contracting
- In action it resembles saltpetre
- Some exert influence over explosive constituent
- It’s among the last components of an older explosive
- Chemical surprisingly inert
- Container brought back by soldiers for gunpowder constituent
- Fool about to produce explosive component
- Chemical engineers needing some information first
- Fool around, producing explosive component
Buddy explains!

The straight part
We know that "Salt" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case salt = nitre.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 NITRE mean?
NITRE noun- Native sodium carbonate; natron.
- A mineral form of potassium nitrate (saltpetre) used in making gunpowder.