greek yougart is a good source of protein

During dental issues, two of my favorites were Mother's potato soup and boiled cabbage. She made the cabbage with bacon grease seasoning, sugar, a little salt while boiling. You might try a good bean soup.

I used to put Ensure in the oatmeal then there was half and half to pour on the oatmeal. Another thing that a nurse told me (he didn't like Ensure) was to put Ensure in a glass with ice cubes and get it VERY COLD...then a bit of ice cream in it to make a milkshake.......he loved that!!! Another one was tapioca pudding or rice pudding with Ensure in it...
Good luck....not an easy thing to do!!

I use whey protein I buy in powder form at Walmart,Vanilla,Chocolate & Strawberry.I jump it up with fresh fruit or canned & mix in my blender.Some times I use ice & make slushies.I also freeze it & eat like ice cream.I wear a colostomy bag(intestines burst).I've used it for about 5-6 years now.Also call a Bariatrics clinic ,speak to a dietican,those patients can only have soft foods for 10-12 weeks after surgery.Krissy D.

If your mother will eat puddings/yogurt etc. try chopping fruit fine and mixing in them. i do this for my mom(who can be a real picky eater) I chop strawberries and put them on banana pudding, peaches on yogurt or cottage cheese etc. You have to chop them very small but it does get them in her.

If she'll eat eggs, you can do a lot with them - boiled eggs (plain or deviled), egg salad, egg over rice, egg custard, etc.

Cheese is also pretty versatile. Think outside the box and melt it over rice, instead of pasta. Add a scrambled egg to that and it becomes an even better meal.

Will she eat beans? Beans and rice is a favorite of many older people. Cook the beans a long time, to reduce unpleasant side-effects.

If she'll drink smoothies, you can add yogurt for protein. One of my favorites is vanilla or strawberry Greek yogurt, with a banana (mixed in blender).

I used my Vitmix to make my mom foods before she passed away. Some of her favorites where smoothie drinks with fresh cantaloupe, raw almonds, carrots and other fruits in seasons especially berries. You can also add yogurt. Presentation means a lot. A smoothie served in a pretty glass with a straw and maybe even an umbrella is more fun then something brown in cup. Also sitting down with them and eating the same food might help. You can also make "gravies/sauces" by blenderizing cooked meat/tomato/potato and then serving over well steamed vegetable and potatoes cubes. Does she like fish?

I personally would not be able to handle Ensure and such. I agree Carnation breakfast would be a better option.

Just an important side-note, here. Older people don't need nearly as much protein, as younger, more active people. As a matter of fact, too much protein is very hard on one's kidneys, especially if the kidneys are already compromised. What you need to strive for is "adequate" protein . . . which really isn't all that much, for an older, sedentary individual.

spinach frittata, custard,various soups like pea soup, cream of broccoli, squash soup, tomato,can always add a bit of shredded cheese to the soup for a bit of protein, cream of wheat.

Hummus is very good. Can buy it in refridgerated dips section. Or make it with garbonzo beans and tahini which is made from sesame seeds and add what every you like to season it. Most use lemon juice and if you like garlic. Some recipes in the store have pine nuts, or roasted red peppers. My family has it with either pieces of pita bread or some kind of cracker or chip. The beans make it a good source of protein. If she eats bread peanut butter on a whole grain bread or with milk would make a complete protein with all amino acids too. And lots of vegetables have some protein in them.
Tofu made from soy beans is also a complete protein and it comes in soft or firm (which isn't too much firmer than cottage cheese).

A soup with lentils and pureed would be soft and protein and nutritious.