Four Tealights. You can use a tray like in the video clip as
long as the pots aren't down too close around the candles.
If they don't get enough oxygen, they go out.
(I used cat food cans to prop the pots on.)
Put a smaller pot over the candles (this pot is 4 inches)
blocking the hole in the bottom.
See how close the thermometer is? (Left side, on the other
side of that frame so it wasn't directly affected by the
flames to get an accurate temperature.)
Share your experiences if you tried one of these. :)