I'm trying to make pancakes using the recipe from Joy of Cooking. It calls for you to mix 1 1/2 c milk (I'm using skim), 3 T melted butter and two eggs. First time I did it, I tried to slowly add the butter as I knew it could cook my eggs, and sure enough I saw chunks in the mix. So I tossed it out and tried again. This time I let the butter cool longer and still saw chunks. Third time, I let it cool about 10 minutes, tested it with my finger to make sure it was cool and yet I had even bigger chunks when I mixed it in! I thought it was cooked eggs, but at this point I think it has to be something else. Any idea what's going on? If it's the skim milk, the only other thing I have is heavy cream - could I combine the two maybe?