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There are many recipes where freshly toasted nuts are called for, and that got me wondering--how far can I toast them in advance without sacrificing flavor? If not, how quickly do they lose flavor, and what causes the degradation? Are there any ways to store the nuts to preserve the flavor of freshly toasted? Would freezing and/or vacuum sealing do the trick?
Do toasted nuts quickly lose flavor?

I have 5 - 6 lbs of sauerkraut in a crock with a water vacuum seal. I read that the first 24 - 48 hours are crucial to the success of the kraut. I also read that the kraut should develop its own liquid during this time, and that one can pour boiled water on top if it doesn't. However, I also read that it shouldn't be disturbed for a fairly long period of time. I am a bit confused. Should I check on the progress after a few days, or not?
How long should I wait before I lift the lid of my sauerkraut crock?

I have a problem. Let's say I buy a frying pan for about 130 EUR. But after 5 months of using it 3 times a week, it looks like the photo. What am I doing wrong please ? (I never scratch the pan. I always wait until it's cold before washing it, I protect the Teflon with shoam)Edited: to react to your comments, my habits are: preheat the pan for about 6 minutes on the biggest flame without oil - to prepare it for a steak. But i use it like this for about 20% of time. Is preheating damaging the Teflon? If so.. what material should i use?
Frying pan Teflon damage