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: You don't need to defrost it, you can add cold roux directly to a boiling liquid. To avoid lumps from the roux, most cooks suggest you either add cold roux to a hot sauce, or cold liquid to hot roux. If you heat the roux gradually with the liquid you may get lumps, and don't get a good impression of how much thickening is going on until it heats fully.  <sep>  Q: What is the right way to defrost roux? A: You don't need to defrost it, you can add cold roux directly to a boiling liquid  Q: The way i've been using them till now is to take the require amount of milk in a pan, add the cubes and then let it be for 5 minutes or so THEN start the heating. A: To avoid lumps from the roux, most cooks suggest you either add cold roux to a hot sauce, or cold liquid to hot roux 
What should I do if it's still lumpy?

CONTEXT: All of these are natural colorants but also impart a bit of flavor with them.For the raspberry layer you could use a tiny amount of beet juice to really kick the red.For yellow colors you have a few options. Saffron can work really well though I'm not sure what mango/lime/saffron tastes like. Another organic single ingredient is Achiote, which has an extremely mild sweet flavor. It's used for coloring mac and cheese and most processed cheese.Hope these ideas help.  <sep>  Q: How can I get stronger colors in three part pannacotta? A: For the raspberry layer you could use a tiny amount of beet juice to really kick the red  Q: Are there any fruits that could improve color? A: Another organic single ingredient is Achiote  Q: Would these produce natural colors? A: It's used for coloring mac and cheese and most processed cheese  Q: Is there anything that could improve yellow colors? A: For yellow colors you have a few options 

Are there any options for white colors?