You give up so quickly it seems. Tastes you aren't used to will not taste normal initially - but why organic spinach is so pungant to you is curious. You need a bit more patience to acquire tastes for good food.
Zero to 100% also might be too fast, too soon- perhaps ease into it a bit slower. Don't take recipes for salad dressings as is too-be creative- instead mix in flavours/spices/herbs that you find tasty. Eating should make you feel good -not like you are consuming a dish of sour medicine.