Possible Clues:

• D'you talk like this? Sounds like it, and that's flat at last
• Language used by Jews
• Old Jewish language
• Kosher tongue?
• Repairs to kitchen perhaps for turnover and plate of tongue
• In a manner of speaking, do it yourself the wrong way with the plate
• Like 56-Down
• Do it yourself initially backwards, and that's 14 down, in a manner of speaking
• Language used by Jews of eastern Europe
• Initially do it yourself on a plate, in a manner of speaking