Take it from someone who had to consume as many calories as possible for medical reasons [1]: nothing beats custard for boosting your daily calorie intake. A si

Take it from someone who had to consume as many calories as possible for medical reasons [1]: nothing beats custard for boosting your daily calorie intake. A single glass is almost 1000 calories, and you can learn to chug it pretty easily. [1] I have a chronic autoimmune digestive disease, at one point I couldn't eat enough to keep from dropping weight, was in hospital with intravenous nutrition etc.; I'm pretty much OK now after surgery and new kick-ass meds.