Put jar of tallow in a pot filled with water to go up the sides of the jar, about 2 inches below the top of the jar.
Turn pot of medium, put the lid on and let heat up until it’s fully melted. It could take an hour or so.
Get your candle supplies ready by covering a solid cutting board with parchment paper.
Lay out your tealight cups or other containers, straighten wicks and put them in the cups.
When the tallow is fully melted, use a spoon to fill up the tea light cups. If you’re able to pour from the jar, that will make things go faster as well.
Straighten the wicks again, then leave to fully cool, minimum 2 hours, before lighting.