John,
Zero taste, is that your experience even with extremes such as lemon, salt, spicy and bitter. (..and I mean extremes like biting into a fresh lemon etc.)
Some of my patients have found that extremes help them to slightly improve their situations. I have also been told that smelling food will help them in their quest to taste again. Some research has lead to the fact that smell is an important part of taste. The brain will sometimes rebuild senses to some extent if stimulated properly. This is similar to salivary glands rebuilding when stimulated. I know every experience is different and every person responds differently I'm just trying to offer some suggestions.
If I can answer any questions for you please contact me.
Cheers,
Mike