Roast a marshmallow.
Meaning: This means to suggest or instruct someone to cook a marshmallow by exposing it to dry heat. It's like saying, Cook a marshmallow over the fire.
Choice of Words: Roast is a verb that means to cook food by exposing it to dry heat. A is an article that indicates a specific noun is being referred to. Marshmallow is a type of confectionery that is made from sugar, corn syrup, and gelatin.
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Related Expressions