I use these for raw food storage. Betwee 2 kittys the 17 oz jar should last ~ 2 days.
The general rule is to feed 2% of the cat's body for raw. For Fred & Ginger, 12 lb & 10, that comes about 4 oz per meal but because they're both long cats I figured 2 heaping tbsp per meal/cat should suffice. I weight them monthly & will find out if they need more/less shortly.