Low-fat milk has 8 grams of protein in each 1-cup serving. Drink by itself, heat it up and add no-added-sugar hot cocoa, stir in no-added-sugar Carnation Instant Breakfast or a squirt of sugar-free chocolate syrup.
Pudding (sugar-free) made with milk from a box mix has 5 grams of protein. If you make it with canned evaporated skim milk instead, you’ll up the protein to 11 grams per ½ cup serving. Another option is to mix unflavored protein into the milk before adding to the mix.
Soup (blended and strained) is a savory protein source for the liquid phase. Protein content is dependent on the protein content of the soup and what makes it through the strainer.