What are some good high calorie and nutritional snacks to increase your weight gain?
High protein foods is what he is looking for. Have you tried a really good beef jerky? Easy to store, you can leave it in your car or locker really. High in protein and depending on what brand it is. Maybe peanut butter would be a good thing too. I would recommend a website like www.caloriecounter.com to help you choose a meal plan for him. I remember years ago while in college, I dated a body builder that was bulking up and he often ate pasta and tons of protein (meats). Maybe individual meals prefrozen with pasta, potatoes and meats would be good.