I have recently purchased a vintage circa 1969 Fondue Pot & Warmer....while the fondue pot is in near perfect condition and I plan on using it, the warming pot I rather not....can not figure out (by the design) how to disassemble for cleaning, not sure of the 'fuel' needed...so I would rather use it for display purposes when not using the pot. This tea warmer is perfect. The fondue pot fits snugly into it as if they were made for each other...and the heat source is a simple tea light available at any grocery or candle/craft store....well made stainless and sturdy.I would NOT recommend a flat bottomed pot for this- unless the bottom of your pot has a convex center no larger than 4 inches in diameter so that the bottom of the pot fits snuggly into the slight depressed area around the center opening (see pix). Turn your pot/carafe upside down and see if there's an elevated area in the middle (the pot is not completely flat)...if it's round & four inches in diameter or less, the pot will fit. The top of the candle sits about 1 and 1/2"- 3/4" from the bottom of the your pot. These measurements should have been noted to save folk without pots of a certain shape from wasting their money.If your pot fits, it's a great little item.