The kefir smoothies are just a couple of cups of home-made kefir (from our own whole, raw goat milk), dumped in the blender with a heaping tablespoon of flax seed meal, a teaspoon of honey, a pinch of salt, and a little flavoring. I usually use vanilla, but have been having trouble finding clear vanilla at a reasonable price (we need gluten-free, and caramel coloring usually has gluten in it), so I got a bottle of sugar-free raspberry flavored syrup, the kind used to flavor coffees. It's pretty good, actually. I may try some other flavors, later. Would like to try hazelnut, but it has caramel coloring in it. Sometimes I add bananas or other soft fruit, but we are trying to minimize carbs. And once or twice a week I add a raw egg to the smoothies. (Our own homegrown and usually fresh the day before.)
Sorry, it isn't much of a recipe, but that is how I do a lot of my cooking, just throw in this and that. It usually comes out edible, and is sometimes pretty good!
Kathleen
Edited to add: these smoothies are quite filling and hold well. We usually have breakfast about 7:30, and I'm seldom hungry much before one in the afternoon.