Compound butter is simply butter with an added flavor or two mixed in. It's not just like buttering an item and then adding a sprinkle of the flavor - compound butter becomes a unique flavor unto itself. You can put these on pastries, meat, pasta - anything you like.
Lemongrass Turmeric Curry Paste Recipe - A bit about this favorite curry paste - it's vibrant, electric yellow in color, and intensely flavored. Made with a shallot base coupled with ginger, and garlic, turmeric, and serrano chiles, it's the sort of thing you can use to make a broth, or flare out simple preparations like scrambled eggs or fried rice. - from 101Cookbooks.com