Add milk to a clean quart jar.

Add 1-2 TBSP of active milk Kefir grains.

Loosely put on a canning lid or cover with coffee filter and rubber band.

Place jar in a warm place in the kitchen where it will not be disturbed.

Leave to ferment for 12 to 36 hours, until the desired thickness and taste is achieved.

Put in the fridge for 4 hours or overnight. (This step produces a thicker end product.)

Using a mesh strainer, strain out the grains from the kefir. You will need to use a non-metallic utensil to work the kefir through the strainer.

Make a fresh batch of Kefir by placing the grains in a jar of fresh milk and complete the cycle again.

Use the kefir in your favorite recipe or enjoy as a delicious drink.