Mother's involved with plan for making bombs (6)

I believe the answer is:

napalm

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'mother's' is the definition.
The answer and definition can be both substances as well as being singular nouns.
Perhaps you can see an association between them that I don't see?

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for napalm that I've seen before include "Incendiary jelly used in flamethrowers" , "Incendiary liquid used in firebombs" , "destroy by fire" , "Highly flammable jelly" , "Petroleum jelly used in bombs and flame-throwers" .)

I've seen this clue in The Globe and Mail.

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