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

Q: I've been wondering about this for a while, since getting interested in knife sharpening.When using a knife, it will get duller. One (the primary) reason being that you "bend" the edge. You fix this using a honing steel.After a while though, you need to sharpen the knife again. Another setting: If you have a brittle knife and/or mistreat your knife you will chip it. As far as I can tell, this should mean that small pieces of metal (dust, shavings, etc.) come lose, and then likely get in the food.Is this correct?Are there no health considerations when digesting small pieces of very sharp metal?

A: Metal dust/shavings in food from knife wear?
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Q: I got some beef this weekend with the following label. This label is obviously not aimed at the consumer, but as I was after a single piece, the guy behind the counter gave it to me in its original packaging. When I got home I noticed the details of the label which opens a whole raft of questions:I'm guessing USE AFTER instruction is to ensure the meat is sufficiently mature before being sold, is that correct? If that's true, is the whole aging process done in these vacuum-pack bags? If so, could I have kept it for a further 19 days before opening (I bought it on the 5th) for a more mature beef? Who needs "Jamie Oliver Matured for 21 days" if we can just do it ourselves? PURCHASED: 5th, USE BY (on sale label): 6th

A: Is beef 'aged' in vacuum packed bags?
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Q: They say you should drink your wine in the 24 hours window since you have uncorked it. But what about using the wine in flavor bases to give sauces a sweet taste? Is it ok to use white wine for sauces even 2 weeks after you have uncorked it as long as it does not have a foul taste?

A:
Can you use wine for cooking even after it's past it's drinking date?
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