Any fast food/takeaway food, including your fast food "restaurants" such as Mcdonalds, KFC, burger king, kebab shops, curry houses etc etc, terrible, terrible food, too much salt, and little nutritional value.
Any prepacked ready meals, any microwave food, tinned food, basically all processed or convenience food.
"Sandwich" ham, or any of that dreadful processed fake meat.
Raw celery (it's fine in soups, stews etc), celeriac, bamboo shoots, soya meat, tofu, beansprouts.
Packet cakes, biscuits or the packets of mix you can buy to make cakes.