Sorry to be the supplement nazi in this, the advice in this thread is still the same as what was handed to me 10 years ago now. It isn't going to change - food, food and more food. We gave the same advice today in our live Facebook chat where someone commented to us that he found it "near impossible to put on weight."
I've always been of the thinking that no matter what body type you are or how fast your metabolism is, you can put on weight if you really want to.
But a shake will have it's place AROUND a planned weight gain diet built from food.
We have MCT oil and complex carbs using oats in our Muscle Food 101 product (and also dextrose and malto) as opposed to a total make of just WPC+dextrose as an excuse for a "Mass gainer."
Some of the options here, although very great recommendations for weight, require quite the walk around the supermarket to collect some of these ingredients and quite the mess in the kitchen. By all means, food should be the way, but sometimes that one or two scoops out of a bag into a shaker with a pouring of full fat milk is sometimes the simplicity in all of this.
What must be stressed here though - supplements ARE NOT the answer if you think this is all you need to drink. They are in the background AROUND an actual planned food diet. They are a "help" to all of this.
Make your
food meals that tiny bit bigger every time you sit down. Only a cup of rice when you sat down for a meal last week? Add that extra tablespoon this week and so on.
Supplement nazi signing out. (sorry)