Add you favorite Fruit Jam (1/8 cup) to the Milk Kefir (1 quart) and stir or shake vigorously until jam is thoroughly mixed in. Using a funnel, pour kefir into a glass container and tighten with an airtight cap.
Let the Kefir sit on the counter for 6-8 hours. Release any pressure build up by unscrewing the cap - every 6 hours or so. Put the cap back on and shake it up to redistribute the fruit. The Kefir will continue to breakdown the additional sugars.
Refrigerate until chilled.
Shake the Kefir to mix before each serving. Be sure to carefully open the top to release any carbonation. Serve and enjoy!