I lift it off to replace it with good quality butter, cream, or olive oil. (cheeseslave.com)
They can be used in winter if good quality butter is not available. (chewfo.com)
I hope by this point, though, you've read enough of my other posts to know that good quality butter from grass - fed cows is among the most nutrient - dense fats out there. (everydaywholehearted.com)