I drank Yoo-hoo throughout my treatments. It felt soothing to my sore mouth and throat. While I did not taste the full flavor, I was still able to taste it a little bit. But this will be different for everyone. Especially since first we are all different. Second, everyone going thru rad. has a slightly different area being radiated. Mine was concentrated on the left cheek and behind the top rear tooth. My right side was spared as much as the docs could so maybe thats why my taste wsnt totally compromised.

Another thing that wasnt too bad was canned sliced peaches. They slide right down without much chewing.

Like David recomends, push the calories. If he doesnt keep up with the calories, it will begin a viscious cycle where he wont feel well and then wont eat. He needs 3000 calories per day to help his body fight the effects of treatment.

How about milkshakes? I used to drink a chocolate peanut butter milkshake that was very high calorie.

Here's the recipie...

3 cups chocolate ice cream
1.5 cups of milk
2 tablespoon smooth peanut butter
1 scoop dry Carnation Instant Breakfast Powder
2 tablespoon chocolate syrup

You can play around a little with the measurements to make it thicker or smoother. This has about 1300 calories in it.

Best of luck