Kitchen Crop Little Creek Stainless Steel Water Distiller, 2 Gallon Capacity, Works on all Stovetops, Double Boiler, Render Lard & Tallow

I'm not sure I've seen a stovetop version in person but a distiller seems to be what you are describing.. something like this? https://www.amazon.com/Roots-Branches-VKP1208-Little-Distiller/dp/B07WSJ2H8C