As pohanginapete thinks crusing is confusing, here is some more about Cruse, a UK based organisation which offers a range of support in all types of bereavements.
The origin of the term is Biblical. Elijah had been sent off into the desert, where the ravens brought him bread and meat morning and evening, until such time as he was sent off again, under Godly command, to find a widow to supply his needs. Accordingly he met the widow, out there gathering sticks, as widows do, and requested water in a jar....'Oh, and some bread while you're at it'. The widow explained to this stranger that she had only a small jar (a cruse) of oil and handful of flour, and a son to feed, but Elijah was having none of it.
'Go home and do as you're told,' he said. 'But first make me a cake out of that flour'.
And the widow did as she was told, as widows are supposed to do, and because of her diligence and obedience, the pot of oil and the jar of flour became inexhaustible. Elijah stayed on, and he and the widow and her son ate from the jars for some unspecified time. (The diet may actually have been better and more varied when the ravens were in charge.)
It's good to be inexhaustible, to spread the oil and flour as far as possible, and, of course, you don't have to be widowed to do it.
Lots of us do it all the time.
But for those who are bereaved (no matter how long ago), and whose supplies of oil and flour are in danger of running low, Cruse is there to help.