You don't need to extract every last bit of fat when you drain ground beef, but removing some makes your food less greasy and better tasting. You have several options for this essential step in cooking ground beef or any other ground meat.
Pour Off the Grease
Simply tilting the pan and pouring off the grease, while holding back the beef with a spatula, slotted spoon or knife, can remove the grease, but it's a risky procedure. You need to pour the grease into a can or a large bowl so you can dispose of it easily in the garbage to avoid clogging your drain pipes, and you risk spilling the grease while pouring. What's worse, even with the best technique, bits of ground beef inevitably spill out of the pan.
Use a Colander
Pour the beef into a colander or onto a splatter screen immediately after it finishes cooking, and let the fat drip off for as long as 5 minutes. Press down on the beef with the back of a spoon to squeeze out more fat. Or, for even more effective removal, pour very hot or boiling water over the beef to remove more fat, again pressing down to remove excess water.
The only downside to using a colander or splatter screen is you have to clean the tools after you use them.
Tilt Up the Pan
Similar to pouring out the grease, holding up the edge of the pan about 2 inches allows all the fat to run to one side. Then, with one hand still holding up the pan, spoon out the grease into a separate bowl with your other hand.
This method removes much of the grease, but it doesn't allow you to simultaneously press down on the beef while spooning it out. And, you must clean up errant grease spills that occur as you transfer the fat from the pan to the bowl.
Blot the ground beef with paper towels, folded in a square for easy removal, while it's still in the pan but off the heat, using the pan-tilting method. Or, spoon the beef onto paper towels set on a cutting board or plate. In either case, press down on the towels with a spoon or your hands to increase the amount of fat they soak up. Use a second set of towels as needed.
This method soaks up more grease than you get with other methods and also provides for easy cleanup -- simply throw away the towels. Handle the paper towels carefully because they can be hot to the touch.