Possible Clues:

• Con might have got this melted together in a mess
• A get-together, if on about us
• French premier's encounter with American is charged but creates a strong coalition
• Process of melting together
• Process of coalescence
• Act of joining as one
• Solar-energy basis
• Type of jazz or cuisine
• Nothing is raised in play to describe nuclear process
• Joining in merriment, nothing is held back