Bring a pan of water to the boil. Use a steamer pan so you can use the same water to steam the spinach later.
Slice the tofu and place it in the boiling water.
While the tofu is boiling, stir together the tamari, fish sauce and lemon juice in a dish.
When the tofu starts to float to the surface remove it from the water, blot dry on absorbent paper and place in a bowl with the marinade.
Heat a non stick pan with sesame oil. Place the tofu in the pan and fry for 2 -3 minutes each side.
Wash the English spinach and place it in a steamer over the water used to cook the tofu. Steam for 2 -3 minutes. remove from the heat, and set aside.
Discard the water use to steam the spinach and in the same pan, gently heat the remaining marinade with the tahini and maple syrup stirring continuously. Heat gently but do not boil as it will separate. .
Serve the sauce over the spinach with ½ tsp sesame seeds sprinkled over the top and with the tofu cutlets on the side.
Note: ½ lemon juice in warm water is a great way to kick start the metabolism and aid the process of elimination.