We call that "Cajun coffee". We were once invited by a tugboat captain to have breakfast on his boat [we had become friends on the Florida coast]. We met on the boat,
very early in the morning, and had the most wonderful breakfast I have ever tasted in my life! He laughed as he served his "Cajun coffee" and explained how it was made. When he buys a new perculator, he immediately throws out the inside parts. You fill it with water, place the grounds along with sugar [to your taste] in the water and boil it on the stove. OMG! It was wonderful! I cannot remember having a more perfect morning ... sipping coffee and watching the sunrise on the beautiful Florida coast!
I, personally, would bite the bullet and ask my MIL or next time she was making it ... watch her like a hawk and try it when I got home. Good luck and maybe someone here actually knows how to make it.
