Useless leftovers

DROSS

"Hint: "Worthless residue after processing." This hint keeps the idea of "leftovers" and "useless" but frames it in a slightly different way, guiding the solver toward the concept of waste material without directly repeating the original clue or giving away the answer."

The word "dross" refers to waste or worthless material, often left over after a process like smelting. In this context, "useless leftovers" directly defines "dross," as it describes something of little value that remains after the useful part has been extracted.