Found a few different iterations of recipe.
Base FertilizerEqual parts: Green sand, Colloidal Phosphate, and Bloodmeal
Add base fertilizer to transplant blocks at 100:1. 100 parts mix to 1 part fertilizer.
The original recipe I found from a show he did.
3 quarts brown peat, 3 quarts compost, 1 quart permits, and 6 Tbsp of base fertilizer.
The newer recipe from his book.
3 parts brown peat, 2 parts permits, 1 part soil, 2 parts compost. If this is in measures of quarts add 1 Tablespoon of lime.
Mini block mix16 parts brown peat, 4 parts compost, 1\4 part green sand, 1\4 part colloidal phosphate.
Link to new recipe
http://www.chelseagreen.com/blogs/soil-blocks-vs-pots/Link to video to original recipe
https://youtu.be/mqy5dhHH09Y?list=PLwH6N4w81YXVJRpidfitbZmknib7giiXK