instruction:
Given the background description of some cooking related query, summarize the question into a title
question:
When making e.g. spaghetti sauce, do I:first sweat the onions and then add the minced meat?first brown the minced meat and then add the onions?do both at the same time but in different pans and add them together afterwards?What are the advantages of preferring one of the options over the others?
answer:
First onion or first minced meat?


question:
I'm trying my hand at a layered mousse cake with a mirror glaze (I guess this is an entremet?). I've read several places that it is advisable to freeze the cake prior to glazing. My question is then: am I supposed to eat the cake frozen? Seems like it would be hard? Or should I let it thaw in the refrigerator? If so, for how long?
answer:
Question about mirror glazes and freezing


question:
It has flavor, but its consistency is too thin.Will letting sit over medium low heat evaporate enough to increase its density or is this useless?Would bringing it to a boil help more. I don't want to ruin its flavor and am afraid bringing it to a boil with high heat will do just that.
answer:

My tomato sauce is very watery