Place clean, un-peeled beets in a saucepan and cover
with water. Bring to boil then reduce heat and simmer for
about 90 minutes until beets are tender when pierced with a
fork. Drain and reserve cooking liquid. Let beets cool.
Peel and cube beets. Transfer to food processor and
puree for 2-3 minutes until smooth. You may need to add an
additional 1-2 Tbsp to achieve desired consistency.