chop celery, potatoes, carrots, onions. place in slow cooker. add 1-2 lbs (0.5.to 1 kg) meat (frozen ok). cover in water. add parsley, sage, rosemary, thyme, garlic, salt, pepper. cook on high until meat shreds (6-8hrs). add optional pasta. remove bones if any. easy stew is done. can be improved by pan cooking carrots onions, and celery with some butter or oil until aromatic and softened/browned, and deglazing the pan after with a splash of cooking wine or beer.