The basic PF recipe is 1/4 cup brown rice flour (measure the flour itself, not the brown rice if you grind it yourself), 1/2 cup vermiculite, and 60ml (4 tablespoons) of water.
The basic PF recipe is 1/4 cup brown rice flour (measure the flour itself, not the brown rice if you grind it yourself), 1/2 cup vermiculite, and 60ml (4 tablespoons) of water. Depending on the vermiculite used the amount of water needed can vary. To prevent a overly dry or wet mixture you can prepare the substrate this way: Put the required amount of vermiculite in a bowl (all at once, NOT for each jar separately!). Use a spatula or spoon to mix in enough water to saturate the vermiculite to the field capacity, mix well. The field capacity is reached when a small puddle,barely visible, forms at the bottom of the bowl when you tilt it. Then add the appropriate amount of BRF and mix together.(This works best if you use 1/2 cup vermiculite and 1/6 cup BRF per 1/2 pint jar) The idea is to coat the wet vermiculite particles with the dry powder as you stir the mix with the spatula.
