I usually drain my canned foods. Like green beans, corn, or legumes. There is some salt in the liquids. I don't usually wash or rinse them.
They can be eaten cooked, warmed, or cold right out of the can. Like with legumes and green beans, if I'm making a 3 bean salad, I wouldn't cook them.
We keep some canned goods in our emergency stash in the truck, in case we get stranded. (which has happened twice in the past 5 years)
Canned fruit I would get in water or low sugar, and wouldn't necessarily drain it depending on the recipe. When I can pineapple or grapes in water, I drink the water because it is sweet from the fruit.
Exceptions where you must cook canned food? I can't think of any but maybe someone can.
Thymeless- Like you said, I'd also recommend soaking the salt off of or out of chipped beef too! I've also been known to rinse sauerkraut if it is too salty.
