I still don't get injecting briskets. I cook 150lbs of brisket a weekend, never inject and get a consistent moist product.
I soak my needles in hot hot hot soapy water and then rinse with hot hot hot water. Haha...
Also only use bottled water in your injections.
When you inject are you moving the needle at while you inject? Maybe you injected too much in one spot? I typically inject while pulling the needle out of the meat to make sure too much injection doesn't go into one spot. I also constantly stir my injection while using it.
I've never had the problem with Kosmos and I use low sodium beef broth. I'll go with the dirty needle theory. We've started buying high quality single use hypodermic needles in bulk. Whenever we switch meats, we switch needles and throw the used one away. At only about 50 cents a piece it's not a bad deal.
I still don't get injecting briskets. I cook 150lbs of brisket a weekend, never inject and get a consistent moist product.