Gaining

I tried a little bit of heavy cream, but god the taste is awful. I can't figure out how others just drink it. What sorta additive can I mix to make it less... just hard to even swallow

I've found that for my taste buds, mixing heavy cream with chocolate ice cream in a b!ender makes it a lot more tolerable. Not a long term thing thought because of the sugar in ice cream

Check the nutritional value though, for example, cream can have way more fat and kcal per serving where as ice cream has more sugar.

At least with the products I compared.