はじめ:まずは腹ごしらえしておこうよ。
たもつ:じゃあ、僕はチーズバーガーで。
Here is で in the second line part of a contraction Japanese use in their daily speech? If so what is the textbook version of the sentence?
Context: Hajime and Tamotsu are at a fast food restaurant, and the second line should be Tamotsu giving his order to the shop assistant. Thus I think で腹はらごしらえする may not be the best fit for the context...