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 enamel is brittle, especially when scratched. cast iron is often cheaper. They clean differently: stainless is initially a little harder to clean, but polishes with use making cleaning easier. Food initially sticks less to enamel, but scratches and cracks change this. using steel wool to clean stainless improves the finish, using it to clean enamel scratches the finish. If you are gentle with enamel it should last decades,stainless will survive children beating on it with almost anything, and can be passed to your grandchildren. thinner metal will heat quicker and cool quicker, but will develop hot spots. Thicker metal will heat more evenly, but heats and cools slower.  <sep>  Q: I'd like to buy myself the best roasting pan and I'm stuck on whether to get an Enameled Cast Iron or a thicker Stainless Steel/tri-ply type pan. I'm looking for the pro/cons of each, and any personal experience with either variety. A: The enamel is brittle, especially when scratched. cast iron is often cheaper. They clean differently: stainless is initially a little harder to clean, but polishes with use making cleaning easier 
[A]: Is either one better at creating a fond, making gravy, or cooking down veggies/onions?


[Q]: CONTEXT: Red lentils have no skin and are thus more absorbent. They literally sucked up the wee bit of water clinging to them along with their neighbors. Surface tension of the water couldn't be broken by the light-weight pulses. When crumbled apart, the brick doesn't feel pasty, no? Next time maybe pour lentils into water; either way, no harm to finished dish.  <sep>  Q: What made these red lentils 'brick' together? A: Red lentils have no skin and are thus more absorbent. They literally sucked up the wee bit of water clinging to them along with their neighbors 
[A]: How can I clean the pan?


[Q]: CONTEXT: Transfer of heat. First you need a hot pan (sprinkle some drops of water on the pan, it should sizzle). Then you add a drop of oil and swirl it around. When the oil forms a striated pattern, it's hot. Then you put the meat in.The hot oil helps to transfer heat from the bottom of the pan to the meat. You only need a spoonful of oil.  <sep>  Q: Why do people put oil/butter in pan when frying ground beef? A: The hot oil helps to transfer heat from the bottom of the pan to the meat 
[A]:
Does it matter if it butter?