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 old thin utensils were made of Nylon.The reasons they are hard to find is that traditional Nylon is difficult to manufacture within food standard guidelines for PAA (Primary Aromatic Amines) migration, and does not bio-degrade or burn safely. For relevant references, your local government health department will have papers on PAA migration.Given that, many utensil manufactures have moved on to other plastics, mostly silicone. Though some use PA66 (Nylon 6,6), which is that thick chunky black plastic stuff.Try wooden spatulas. They are simple, clean, disposable, and you can get them in thin wedge shapes (e.g. at Asian supply shops).  <sep>  Q: Where did the thin, smooth plastic spatulas go?###20 years ago, the most common type of rigid spatula (or "turner") was smooth, thin (as in 3mm or less with a sharp edge), and generally made of nylon.### These spatulas were not very durable (leading edges tended to melt), but they were very very good for making eggs and other delicate non-stick-pan dishes. A: they are hard to find is that traditional Nylon is difficult to manufacture within food standard guidelines for PAA (Primary Aromatic Amines) migration, and does not bio-degrade or burn safely 
[A]: Why did manufacturers stop making thin, smooth plastic turner spatulas?


[Q]: CONTEXT: I've only heard of massaging kale. If you rub the greens together they get softer, darker and more tender and useable in a salad. Never done it with anything else. Wilted is steamed or blanched greens. Wilting definitely changes the texture and can make the greens more palatable and less bitter. I won't eat raw collards. I also always salt and squeeze my cooked spinach before using as it knocks out the bitterness.  <sep>  Q: What is the difference between a wilted salad and a massaged salad? A: Wilting definitely changes the texture and can make the greens more palatable and less bitter  Q: As many wilted salad recipes call for warm dressing, does this mean the wilted salad will lend itself better toward cooked ingredients compared to massaged or raw greens? A: an make the greens more palatable and less bitter 
[A]: Does wilting the greens in the salad have any particular impact on the texture?


[Q]: CONTEXT: Chocolate is an odd substance when it comes to melting and hardening. When chocolate hardens, its melting point will end up being just a few degrees higher than the hardening temperature.When chocolate crystallizes at high temperatures, it forms a strong, dense crystalline structure that, texture-wise, is quite brittle. Most bought chocolate (baker's chocolate and chips) is already tempered, but when you melt it, you break down that crystalline structure, and if you harden it at room temperature then it ends up forming very weak crystals that will melt in your hand.If you use a special coating chocolate (couverture or the lower-quality compound chocolate) then you don't need to worry so much about tempering (although it's still a good idea), but if you use ordinary chocolate and don't temper it then your coating will end up being messy and wet and rub off on your hands while you eat it. It might even melt while stored.Tempering is the key to making a room-temperature-stable chocolate coating. If you don't do this, you'll need to keep your pastries refrigerated until they're ready to consume.  <sep>  Q: What is the purpose of tempering chocolate? A: Tempering is the key to making a room-temperature-stable chocolate coating 
[A]:
What is the process that's used to temper the chocolate?