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

Example Input: My roommate decided to store a sizable purchase of ground beef in the freezer. For reasons I don't entirely understand, he would thaw it as needed at cook temperature in the microwave, then refreeze.Quite a bit of this beef remains, and it's been in the refrigerator since I discovered his shenanigans, but unfortunately it's difficult to make patties out of the meat because it's partially cooked. I don't want it to go to waste, so what might I use to hold it together while making burgers that still taste like burgers?
Example Output: Making patties from half-cooked ground beef

Example Input: My girlfriend and I make a large batch of yogurt every week, and have done so for more than a year now - we just eat a ton of the stuff. THis leaves a lot of leftover whey which we used to just throw out. This past week I took my first swing at making mozzarella, and noticed that the recipe suggested not throwing out the whey, but rather using it to make ricotta by boiling it. I ended up throwing out the whey from the mozzarella anyways because it was a tiny batch, and we had to make yogurt anyway.So, we made the yogurt, and my girlfriend saved they whey for me. I've been simmering it for a few minutes now, and it doesn't appear to be working. Nothing is curdling. I'm wondering if its a function of not having anything acidic in it? I tried adding a quarter teaspoon of citric acid, but still nothing is curdling. At this point I'm curious to play with it, so I may try simmering it all the way down into gjetost. So really i guess my question is, outside of being less acidic, is whey from making yogurt different from whey from cheese making?Also as a note, we use 1% milk.
Example Output: Using whey from yogurt to make ricotta

Example Input: I am working on a scratch chicken, vegetable orzo soup. I'm not following any particular recipe, just shooting from the hip. I usually come up with a good meal but the problem I always run into though is with gauging how much pasta (or barley or rice) to add to a soup and keep it at all balanced. Protein and veggies are easy since those ingredients usually do not change in size during cooking but whenever I use a starch that changes in volume while cooking I end up with a soup that is either starch heavy (too much grain or pasta) or starch light (too much veggie and protein in relation to the starch.)So my basic question is: I have a half cup of dry orzo sitting at the ready. How many cups will that half cup turn into after cooking in soup stock? I am using orzo right now but would also be interested in seeing similar information for other types of pasta and any soup-suitable grains. Any rules of thumb or ideas for different approaches would be appreciated as well.Thanks!
Example Output:
How to gauge orzo's change in volume from dry to cooked for a soup?