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:`.

CONTEXT: In the fridge, an hour should not be a problem, but could still end up bitter depending on the kind of onion used. Usually, Marinades, Pestos etc. that use mashed onions and/or garlic taste best if they are made the way the name "Pesto" suggests: Cutting stuff very fine, then using a mortar and pestle. Most explanations WHY that is the case have to with the fact that blenders tend to disintegrate cell walls with relatively rough cuts of a fast but half-sharp or blunt blade, releasing more enzymes etc. from the cell walls as opposed to from the cell contents. These are plausible, since some of the compounds in different parts of onion cells are known to actively react when the onion is disintegrated.Also, try adding oil (which you often want in a marinade anyway. No unrefined olive oil in a blender, though - that is known to get bitter!) while mortaring or blending - this will help extract flavor compounds and probably provide some oxidation protection.There is a well known marinade working with onions, garlic etc: Bulgogi marinade.  <sep>  Q: How long can blended onions stay relatively fresh? A: In the fridge, an hour should not be a problem, but could still end up bitter depending on the kind of onion used 
What does TVP stand for?

CONTEXT: To prevent the sticking, you might want to use a spray oil, maybe even just on the foil before you put the vegetables and potatoes on. It's a tiny amount of oil, not enough to make things noticeably greasy, but will be pretty effective. Another spray over the top will make them brown a little more nicely and may even prevent a little drying out. Alternatively, you can just toss them all in a bowl with a small amount of oil; it really doesn't take much, and I'd hardly describe it as "covering with a lot of oil."As for preventing things from drying out, first and foremost, don't overcook them. Broccoli and onions both roast very nicely, but you definitely want to pull it out before it starts browning/burning too much. If you slice the potatoes thinly enough, they'll cook in roughly the same amount of time as the broccoli and onions. So if things are getting overcooked, just don't leave them in the oven as long.You can also always try covering them. Another sheet of foil over the top will trap a fair amount of moisture, letting them steam a bit and probably preventing some burning as well.(I suppose it's also possible that it's all drying out because you're cooking them too slowly, so they have plenty of time for moisture to escape, but that seems less likely given the way you described things.)  <sep>  Q: When I cook my meat, I usually bake or broil it, I basically use the oven. I like using the oven to make the side dish while baking the meat. Usually the side dish consists of a combination of sweet potatoes / yams, broccoli and onions. I slice the potatoes and make sure the broccoli pieces and onions are large enough so they will not overcook / burn. However, usually this combination ends up being really dry, and everything sticks to the aluminum foil. ###So im looking to bake side dishes, having problems with dryness A: To prevent the sticking, you might want to use a spray oil, maybe even just on the foil before you put the vegetables and potatoes on  Q: what kind of oil is best? A: Another spray over the top will make them brown a little more nicely and may even prevent a little drying out 
Yes, but which oil is best to be used? I want my meals to be healthy, and covering everything with alot of oil is not appealing to me.

CONTEXT: I think grilling is probably a bad plan for duck legs; the fat content is a real danger like you said, and duck legs are tough enough you probably want to confit them or braise them.If you absolutely have to grill them, I would suggest confiting them at 200 degrees for three or four hours first (you could use veggie oil in a pinch) and then resting them in the fridge for a day or so in oil. As for finishing them on the grill, rinse them off gently, re-season if needed, cook flesh side down on a medium heat portion of the grill for a while until mostly heated through, then flip them over on a high heat portion of the grill to crisp up the skin, watching out for flares.  <sep>  Q: Tips for grilling duck legs? A: I think grilling is probably a bad plan for duck legs  Q: Why is it a bad plan? A: the fat content is a real danger like you said, and duck legs are tough enough you probably want to confit them or braise them  Q: Will this make the duck tough? A: If you absolutely have to grill them, I would suggest confiting them at 200 degrees for three or four hours first (you could use veggie oil in a pinch  Q: How do I make them look appealing? A: resting them in the fridge for a day or so in oil  Q: Do you have any other advice to make this melal not turn out as a disaster? A: As for finishing them on the grill, rinse them off gently, re-season if needed, cook flesh side down on a medium heat portion of the grill for a while until mostly heated through 

Do I let them rest after they are cooked?