I think of L.A. as truly the melting pot. It's basically a mini-country unto itself.

Honolulu is a melting pot.

America is not a melting pot. It is a sizzling cauldron.

You can’t be the "melting pot" if one or some ingredients refuse to intertwine with the rest. You’re more like the sorted piles on a chopping board.

America's a melting pot, all races, cultures, religious choices.

The Midwest is a musical melting pot and the source and birthplace of several musical genres.