Boil the beetroot whole with the skin on and cool it fully before it meets the kefir, or the kefir splits. It should be an aggressive pink; if it is beige something went in warm.
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.