/b/sixpacksmackdown/posts/chocolate-peanut-butter-banana-homemade-mass-gainer-shake-recipeOne question I get over and over is "what is a good mass gainer". While there are plenty of good gainers on the market, the truth is a good mass gainer is one that has lots of calories and a nice balance of protein and carbohydrates.en-USTelligent Community 11 Non-Production