Can I soak dried mushrooms in a broth or stock to rehydrate them?

Yes, you can get creative and use whichever products you would like to cook with.

It is polite to drink the broth. However, if you are at a fast-food restaurant, it does not really matter (similar to how sushi etiquette doesn't apply to a cheap...

Germination will be about the same. It is better to dry them though. Germination with wet seeds works better.

The grounds are completely dried when they are golden brown. Over-dried grounds would be crumbly and dark.

Several sources say that fresh lemongrass can make broths too bitter, but the muted flavor of dried leaves might have less punch. Another thought is to use the fresh leaves...