The slow cooker, that is very simple....but you can boil them in the real pot, red wine, and leave it in the slow cooker.

The slow cooker setting can go higher up. It keeps warm all the time. Its to stew the meat. 

Let's say the mushroom and the onion a bunch, and you put the tear meat just boiled in there sautee, then dump the entire things inside the slow cooker, and I don't eat or get hungry, so they just sit there, I watch them until Nicky gets back, or he is always at home, that is where he can taste, and later its already cook on the boiling methods before, but you have the sautee mushroom and the onion to stew them a bit.

https://www.youtube.com/shorts/5T44Bzb8qrU