Whenever I browned hamburger meat for tacos, spaghetti, or whatever, I used to take the meat out of the pan, transfer it to a strainer to drain the grease and then return it to the pan to finish cooking.
I have found an easier way to handle the excess grease without all the work. This is so much easier and less mess to clean up. Just brown the meat, tilt the frying pan so the grease drains to one side.
Take a couple of paper towels and soak up the grease, the more grease there is the more paper towels need to be used.
Remove the grease soaked paper towels and discard on a paper plate or some other type of container. Then toss the paper towels in the trash. I use this method all the time now and it's so much easier.
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To keep ground beef recipes from being so high in fat, I brown the ground beef, then rinse the beef in a strainer using the hottest water I can.