Given the background description of some cooking related query, summarize the question into a title

Input: Consider Input: My husband and I do not drink milk during the week, and rarely use it for cooking. However, on weekends when I am home I like to make coffee and have it with milk. The problem is it is very expensive to purchase even the smallest container of 2% milk at the store only to have it go bad before I've gotten more than a quarter of the way through it.Is there a way I can preserve a quart of milk for my coffee, without it going bad? Is freezing an option? I am not a fan of milk alternatives, or the little creamer things that are shelf stable.

Output: Preserving small amounts of milk

Input: Consider Input: Me and my friends have been cooking a 2kg=4.5 pounds piece of rumproast in a bbq smoker. We cooked it at about 250F for about 3 hours. After that we, wrapped it in tin foil, raised the temperature to about 300F and cooked it for an additional 3 hours. Our thinking here was that we can raise the temperature a bit, since the moisture can't escape anyway because it's wrapped in tin foil.We were hoping for a juicy and tender roast, that "tears apart" easily with a fork. At the end it wasn't tender and it was so dry that we were afraid it would suck the moisture out of the air... When we unwrapped the tin foil there was a lot of liquid (juice), that should've probably stayed in the meat? Was the temperature too high or wasn't the cooking time right? Is this even an appropriate piece of beef for "low and slow" smoking?

Output: Dry and Tough Rumproast

Input: Consider Input: We bought a smoker and it has been fabulous for doing ribs. However, when we've tried to do chicken in it, it comes out "leathery" and tough. I have had smoked chicken at other people's homes that was DELICIOUS. So, what are we doing wrong? (We've tried whole chicken and parts, both were tough)
Output: How to smoke chicken without it coming out tough?