Meaning of "〜ておきましょう"
Hello ! Can someone explain to me the form of the verb at the end of this sentence ? (The context is a cooking receipe)
ジャガイモは皮をむいて、大きめに切っておきましょう。
I get the general meaning of the sentence, but I don't know what the 「〜ておきましょう」ending brings to the meaning. :)