1/3 Canadian Peat
1/3 Earth Worm Castings
1/3 Perlite (I like the little lava pebbles made for growing better - please use what works for you!)
20% by volume (of above) Composted Steer or cow manure (brings a different bio source for a broader or more diverse living bio heard)
Please make and use the nutrient and mineral amendments your own.