Gaining

Two weeks gaining diet help

Hello all, I am gonna be alone for 2 weeks soon and wanna know how and what to eat to grow as much as I can.

Was planning on doing two shakes daily, one at breakfast and one before bed. Shakes will be either with heavy cream or with serous mass powder(or something like that). Ik fast foods are good and all but I also know that they arent giid for my health in the long run so will do them 5 times around the 2 weeks. Plus will try and have as much icecream as I can hahaha.

Apart from the gaining Ill be trying to go to a GYM to do some cardio or at least walk on a treadmill and do some basic leg and core exercises.

Any help on what to make or eat during that time will be really appreciated!
1 week