Translation of "Roasting" in Japanese

He is roasting coffee beans.

彼はコーヒー豆をいっている。

You know, the ones where you skewer some marshmallows and roast them. I don't know what they're called but they're really good. Let's try roasting some at my place sometime, too.

マシュマロを串に刺して火にあぶって食べるやつ、名前は知らないんだけどすごくうまそうだったよ。今度うちでもやってみようよ。