And “Flash in the pan” was from old musketry where the powder was put in a “pan” to be ignited with a flint and had a flash hole drilled through to the chamber which ignited the main powder charge. Thus the resultant “poof” always preceded the actual blast from the musket. When the powder flash happened but failede to ignite the main charge it was a “flash in the pan” of brilliance followed by...nothing.
Maybe Dutch?