Break/cut and flatten the breast bones. Especially with a turkey as, otherwise, it takes up too much space
Put the bones in the slow cooker. Depending on the size of your cooker, you may need to do this in more than 1 batch. I always do 2 batches for a turkeyDon't cram the cooker, leave room for plenty of water or you won't get all the goodness out of the bones
Scrub the carrot and trim. Cut into 3-4 pieces. Add to cooker
Peel the onion and cut into 4 pieces. Add to cooker
Add the herbs and spices
Cover with water to just below the top of the slow cooker. If the stock is too weak, we will reduce it later
Set your slow cooker to Auto if you have it (this gets the temperature to High, then turns it to Low)
Use Low if you think you will leave the stock for more than a day
Leve to cook for 12-24 hours
When you're ready, strain the stock through a colander to remove the bones
If your colander has large holes you may need to use a sieve to remove small seeds or pieces of meat/bone
Leave the stock to cool or use immediately for soup.
Notes
Everyday Cooks tips:
To dispose of the bones, wrap in newspaper before putting in the bin
If the stock is too weak, reduce by boiling in a large saucepan with the lid off until it has halved in volume. (This may take up to 20 minutes, but keep an eye on it).
Spices to use: I have pared down my spice cupboard, so I only use the three spices/herbs I've listed, but you could add mustard seed if you have it. The only one you really need is the bouquet garni.