It's like carpaccio Italian agreed eating a thin strip (7)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

It’s like carpaccio , Italian agreed, eating a thin strip [A + SHIM (=thin strip, of metal, wood)] in SÍ (=Italian agreed, i.e. the Italian word for yes ); carpaccio and sashimi can both involve thin strip of raw fish