For example, you may feelhave a bitter or sticky feeling in your mouth, feel thirsty, get blisters on your lips andor have eye discharge the next morning.

I guess ithis is because chefs add too many “seasonings” to their dishes, and some of the “seasonings” are even harmful.

In my opinion, over - -processed foods are even more harmful since they contain lots of additives and preservatives, so I never buy packaged foods in stores.

If I could run a small business, it would be a small restaurant.

Unless you really mean you want the size of the restaurant to be small, this is not needed information.

As I aged, I've grown older, I've gradually realized that the food being offered by restaurants wais not ideal.

I -> I've (look up perfect tense)
As I aged --> As I've grown older (sounds more native)

was -> is (corrected the tense)

Have you had these symptomsever felt sick after eating at a restaurant?

had symptoms -> felt sick (sounds more native)

For example, your mouth may feel bitter or sticky in your mouth, feel thirsty, get blisters on your lips, and have eye discharge the next morning.

(The added comma is a style choice. I like it, because it allows for clearer writing, which is why I added it.)

When I cook at home, I just use oil, salt, green onions, garlic, and ginger, with no other ingredients.

In my opinion, over - processed foods are even more harmful since they contain lots of additives and preservatives, so I never buy packaged foods in stores.

To eat healthy foods, try to cook at home as much as possible and keep the food low in oil, salt, and seasonings.

My Views on Food

As I've aged, I've gradually realized that the food offered by restaurants was not ideal.

Have you had these symptoms after eating at a restaurant?

I guess it is because chefs add too many “seasonings” to their dishes, and some of the “seasonings” are even harmful.

In my opinion, over - processed foods are even more harmful since they contain lots of additives and preservatives, so I never buy packaged foods inat stores.