Given the background description of some cooking related query, summarize the question into a title

[Q]: I am relatively new to deep-frying. Having seen the questions about oil reuse and conservation, I'm still at a loss about what's going on with my oil...My sunflower oil foams like crazy. I've been reusing this oil for a while now and was going to discard it, however a friend of mine told me this oil was still looking good. Relatively clean (I filter it regularly), no off smell and it doesn't smoke (in my fryer, that is). I only fry potatoes in this batch of oil to avoid flavor transfer. These are cut into French fries, chips or straw potatoes. Specially the chips and straws retain a lot of water, and I guess that has something to do with it.Also, I noticed the frying takes longer with the foaming oil.Edit: I've tried poaching(?) the French fries, but they foam during poaching. Then when frying, they really foam. I have to keep an eye on it or the oil spills over the top. Anything I can do about it, or should I just go ahead and discard the oil altogether?Edit: Serious Eats has an article about frying oil.
[A]: Frying - Oil foams


[Q]: We're going to try canning some homemade chili with canned kidney beans. Question: Would it be best to add the beans right before canning so they don't get over cooked or do you think there would be little difference if they were cooked with the chili before canning. I'm trying to avoid mushy beans but would like to cook a big pot and can the left overs. I usually add the beans in the last half hour of cooking anyway.
[A]: Canning chili with beans


[Q]: Some say one should use more than one cutting boards because if you use just one board for raw meat and vegetables, bacteria from raw meat moves to the board and then to the vegetables, then you eat that vegetable raw, and you get sick.Some uses more than two cutting boards: one for fish, another for raw poultry, yet another for dairy and so on. What if I use just two rather than 3 or more? One for stuff to be heated, another for everything else. What do I gain by using 3 or more rather than 2?
[A]:
Is it OK to just have two cutting boards: one for stuff to be heated, another for other stuff?