Given the background description of some cooking related query, summarize the question into a title

Q: I can find whipping cream, half and half, and even clotted cream where I'm staying in the US but not double or single cream, are these familiar terms or is there a US equivalent term?

A: What's the US equivalent of double and single cream?
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Q: I'm actually making root beer, but I've found the best way is to boil herbs and spices the same way one would make a tea, and then I add sweetener, leave it to chill, and use a carbonation device to add bubbles.So far I've been using ready made root beer ingredients that come either in extracts or in bags of herbs, like a loose leaf tea. Now I want to go the next step and make my own blend.I've got a recipe I want to try and have bought all the ingredients I need in whole form. I'm wondering if there is any advantage in grinding them up. This answer on this site leads me to believe that it's workable to leave spices whole, but I feel like that wouldn't be the case with a whole nutmeg nut. Surely the flavour would not be accessed by boiling water in such a hard and thick nut?I also learned that in the case of tea, it's actually inadvisable to boil or steep them for too long, as it releases bitter tannins. So I wonder if grinding down spices to "release" more flavour might also have adverse affects.So, bottom line, maybe you can boil spices whole, but maybe it's better to chop or grind them a little? And if so, how far should one take it?

A: Is there any diminishing return on grinding spices for a "tea"?
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Q: For Xmas I was given a steamer.This is good as I, as I expect a lot of people in the world have done, have resolved to lose some weight this year. Now I understand that steamers are good for cooking fish. One of my favourite accompaniments to make for fish is a white wine and parsley sauce, basically a thin Bechamel with white wine and parsley (occasionally with tarragon or dill depending on my fancy).What I'm wondering is how to achieve the same effect with fewer calories. A white herby, winey sauce that's lower in fat... What do you think?

A:
How can I reduce the fat in a white wine and parsley sauce?
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