Ideas on liquid diet???

What is the best to drink on a liquid diet? to make sure you are getting you right vitamins and still lose weight? and taste's good too. is slim fast any good as far as being healthy?

I have a great new recipe that tastes great and was approved by Dr. De La Torre's office. They don't want us to use Sugar Free Carnation Instant Breakfast because it doesn't have enough protien (4 grams), but I mix it with CarbCountdown milk (12 grams of protien) and a scoop of whey powder (7 grams of protien) and blend it. This gives me a drink with 23 grams of protien per 8 oz.!!!! I'm only 5 days post-op, so I can't get 8 oz down at one time, but I am getting good tasting concentrated protien!