Make sure you are using a larger bowl. Melt chocolate, condensed milk, vanilla, cocoa and hot water in a double boiler just until chocolate is completely melted. Take the mixture off the burner and mix in coconut one cup at a time until coconut has competely absorbed chocolate. More or less may be required depending on how moist your coconut is. More coconut can be added if stiffer cookies are desired.
Drop chocolate coconut mixture by the spoonful onto parchment and bake in the oven 12-15 minutes or until set. The cookies should not spread very much at all. They will be soft after removing from the oven, so allow them to cool before removing from the parchment. Enjoy.