I am making a Chipolte Meatball recipe from Rick Bayless Mexican Everyday. After making the meatballs and baking them in a 450 deg oven for 20 mins I noticed that the fat did not render. I was able to scoop off this really strange scum from around them. Any ideas why and are they safe to eat?.
By the way the meatballs main ingrediens are minced bacon ( 3 slices), eggs( 2 ) breadcrumbs( 1/2 cup ) and pork ( 1lb ).