Oh, you mean Pfannenabrieb (pan drippings) or Brittzel as my aunt called it.
You can make gravy or a sauce out of them, or take a spatula, scrape them loose, tip pan so most grease runs off, take the spatula and put them on bread or toast.
If there is a lot of grease/oil get a fine sieve , pour oil through it into a jar, let drip out, take pfannenbrieb warm in a micro-wave and put on bread.