I like to share a high protein source and no fat/low calory source. Not sure whether the German name of it rings a bell, though. We have a cheese that is called "Harzer" cheese. It is made from what is called "sour milk" if I translate it. It comes in a package with four rolls, each 50 gram. So 200 gram have 250 kcal. I combine it with veggies and have an evening meal with high protein content: of 60 gram. Curd/quark has 60 gram protein in 500 gram. So you can imagine the power in that cheese.
Maybe this is available elsewhere, too (under another name I guess). It's my little protein miracle that I am very thankful for.
Best
Mahalo