Possible Clues:

• Suitable time
• Add flavouring to
• Summer, for one
• Salt, say, in short shanty?
• Add zest to or rips off rap session?
• Put in some quality thyme?
• Compose a sonata piece that's mellow
• Mediterranean is so named in winter
• For example, the fall of US spy state is so nuanced from the start
• Late spring through early fall, for weddings