Gainers
Gainers combine protein and carbohydrates in a single shake to easily increase your calorie intake. They are for people bulking who struggle to eat enough.
Choose a low-sugar lean gainer (Muscle Fuel Anabolic, Protein Mass Professional) or a very high-calorie hard gainer (Hyperbolic Mass, Mutant Mass). Applied Nutrition Critical Oats porridge is an alternative you eat.