Blended or not blended is the only decision, and unblended keeps the raspberries as raspberries. Kefir is thin enough to drink and thick enough to eat, which is why it beats yoghurt here.
It did not make it into the plan for these seven days.
The method above is what decides the dish, not a step-by-step recipe. The link runs a web search on the name: this page has no vetted sources of its own, and will not invent any.