I do many of the above , but one of our favourites is chicken tarragon: sautéed onion, mushrooms, white wine, orange juice, tarragon stalks, reduce add sour cream and chicken. Served with fresh egg pasta.
Stock: I usually freeze carcasses (chicken, turkey, pheasant - I even scrounge from family who’d usually discard) then simmer four (I have a massive 22 litre stockpot) with onions, leeks, celery, bay leaves, peppercorns & thyme for about 6 hours - simmer very, very gently with the veg lying on the top (this creates a lovely clear stock).
I then ladle out most of the stock through a sieve, pot up into plastic yoghurt pots, refill the stockpot with water and simmer again, then strain.
Never add salt, as I add that when using the stock.
This way I get about 15x450ml pots which I freeze. It’s a bit of a faff but I only do it 5 or 6 times a year and I have all the stock I need. So nearly £30 worth of stock from leftovers.