Grate the beets.
Place the grated beets in alarge crock and cover with the lukewarm water.
Cover securely and place in a warm place.
Keep covered for 6 days then it is ready.
Skim the resultant scum form the top and pour through a clean cheese cloth into a clean jar.
This will keep refrigerated for 12 to 14 days.
It should be deep red in color and have a sour smell.
If mold grows on the beets this is normal.