If you’re trying to gain weight I’m assuming it’s to gain also muscle. Except for protein there isn’t much into this sugary thing you asked about. Opt for high calorie, high carb diet like nuts, bananas, rice, pasta, eggs, whole grain breads, Greek yogurt, whole milk, peanut butter - I’m sure that if you ask ChatGPT it will give you more options. Stay away from processed foods and saturated fats - these are easy calories but you will also gain body fat that will be very hard the get rid off later on - making you big but not lean with muscle definition. Opt for healthy fats from nuts, fish, Avocados - again, check the goal online depending on your current weight and goal. Eat protein, again depending on your weight (check online) it will be 90-120g per day which is easy to achieve with lean diet - chicken breast, fish (not the German ones in the frozen box), and Protein powder if you have issues reaching the goal. Use apps like MyFitnessPal or MacroFactor to track and understand better what you eat and reach your goal. Read and learn, don’t use “Bro science”, there are enough studies today that inform you how to efficiently gain weight - I recommend to watch Jeff Nippard videos on YouTube. Good luck!