prep time: 30 min
cook time 2 to 3 hours
items: 1/2 pint kerr jars, available at your local grocer
*for each jar*
1/2 cup vermiculite,
found at any garden store
1/4 cup brown
rice flour, avalible at any health food store
1/4 cup bottled
hammer and nail
Poke 4 holes in jar lids with nail and hammer (fig. 21).
place vermiculite and rice flour in large bowl. sift mixture. add water and mix well. place substrate in 1/2 pint jar
until level with bottom of lid threads (fig.69). wipe off any leftover material. fill in remaining
space with dry vermiculite. cap lid Loosely and cover with tin foil. fill pressure cooker with water according to directions
in manual. place jars in pressure cooker and steam for 30 to 45 min. let jars sit over night in sterile place.