there's (plenty) more where that came from

there's (plenty) more where that came from

There is an abundance of the thing one is talking about. A: "This stew you made is delicious!" B: "Thank you! There's plenty more where that came from, so eat up!" A: "How did you get your hands on these documents?" B: "My little secret. Besides, there's more where that came from, all proving your involvement in the crime."

See also: came, more, that

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