Salad bowl (cultural idea)
A salad bowl or tossed salad is a metaphor for the way an intercultural society can integrate different cultures while maintaining their separate identities, contrasting with a melting pot, which emphasizes the combination of the parts into a single whole. In Canada the latter metaphor is common, but this concept is also commonly approximated by cultural mosaic.
Source: Wikipedia — Salad bowl (cultural idea) (CC BY-SA 4.0)