Got lots of molotov cocktails that I use often, and want to get the Demolitions Expert perk so they do more damage, but is a molotov cocktail a grenade or no?
Answer
Yes, in Fallout 4, Molotov cocktails are considered grenades.
From the wikia page on Molotov cocktails, the related perks are listed as:
Demolition Expert, Bloody Mess, SCAV! – Cautionary Crafts
Additionally, Molotov cocktails are listed under the Explosives tab of the Fallout 4 weapons wikia page.
Attribution
Source : Link , Question Author : Typo , Answer Author : Vemonus