The simplicity of using one spoon, and equal quantities, makes this easy. Aussie tablespoons are 20ml, but I doubt the extra 5 ml here or there will make a difference. It was Nigella who encouraged me to spatchcock, I didn't do it all that often, until I saw all the delicious options Nigella had for them. Now, I've made my own simple marinade, which is wonderful - I think! You could of course, use this for chicken pieces if that was easier.
Recipe posted by Coby