Given a paragraph about cooking, and a set of conversational question answers about the paragraph, generate a relevant question to the topic of the paragraph. The paragraph has the prefix 'CONTEXT:'. Each conversation question has a prefix `Q:` followed by the answer prefix `A:`.

[Q]: CONTEXT: The ripening itself is caused by ethylene gas released by the food, which is trapped by any kind of bag.As far as I know, there's nothing inherently special about a brown paper bag, other than the fact that it's porous and thus still allows some air to get in and out. Plastic ziplock bags have no ventilation, so they don't work nearly as well.  <sep>  Q: Why does a brown paper bag speed ripening? A: As far as I know, there's nothing inherently special about a brown paper bag, other than the fact that it's porous 
[A]: So many people suggest using them for bananas. Is there something special about the banana?


[Q]: CONTEXT: Presumably you are experiencing rancidity, due to oxygen.While you have nitrogen flushed the bags at filling time, the bags are not impervious to oxygen diffusion.A different type of bag (an "oxygen barrier" bag material) or package (glass jar, or metal can) and, in addition, (based on other packaging I have seen) oxygen absorbing packets inside the bag may be required for long shelf life. Either alone would probably extend the shelf-life somewhat.  <sep>  Q: Why do my cashews smell after 2-3 months? A: Presumably you are experiencing rancidity, due to oxygen  Q: We back them with polypropylene pouches with nitrogen flushing. Could there be any other issues than rancidity? A: While you have nitrogen flushed the bags at filling time, the bags are not impervious to oxygen diffusion  Q: What can I do to stop this diffusion? A: A different type of bag (an "oxygen barrier" bag material) or package (glass jar, or metal can 
[A]: What is the cost of something like this?


[Q]: CONTEXT: Caffeine is bitter, tea isn't too bitter because as you mentioned it's only got 40mg of caffeine. If you then triple the amount in there it's going to taste that way. Try adding 3 tea bags to your cup and I'm certain it'll taste just as bitter.Energy drinks have copious amounts of sweeteners added hence why they don't taste like caffeine. If you are hell bent on more caffeine without the associated bitterness but not adding sugar maybe a sweetener like stevia would be the way forward...  <sep>  Q: Why does caffeine taste bitter when added to tea? A: Caffeine is bitter 
[A]:
Why doesn't caffeine that is already in the tea or in an energy drink taste bitter?