Altough it has a premise that seems quite common and repetitive, the plot develops into a enjoyable story.
The first chapters werent particularly outstanding but towards the third volume you start getting a deeper look into the caracthers inner toughts and psycology which I found quite refreshing and interesting.

One big plus that this manga has is that it does not focus too much (barely at all) in the more "outlandish" experiences of the younger sister. It is a very not-magical kind of developement.

Ps the amount of detail and work that is put into the recipies is honestly surprising lol as someone that loves cooking I appreciate the authors efforts .

Give it a try if you want something easy to read.