Don’t underestimate bread-baking with ~てはいけない


Grammar Explanation

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Cocoa tells her friends they mustn’t underestimate baking bread. Rather than prohibiting them, this gives the sense that it would be wrong to underestimate the process of baking bread.

ココア:
「みんな パン(つく)なめちゃいけないよ!」

Note that ちゃ is a casual spoken variation of ては.