Onion itself is very irritating to the gastrointestinal tract. It can't be said that they can't be eaten with any food, but it is not recommended that you eat with any food. It won't hurt much, but the stimulation will definitely get bigger and bigger. Here are some foods that are not recommended to eat together.

1. Onions and fish can't be eaten together. Fish is rich in protein. When onion and fish are eaten together, oxalic acid in onion will decompose and destroy the rich protein in fish, making it precipitate and difficult to be digested and absorbed by human body.

2. Onions can't be eaten with kelp. Kelp is rich in iodine and calcium, while onion contains oxalic acid, which is easy to form indigestible precipitate when eaten together, and will also affect the absorption of calcium.

3. Onion can't be eaten with shrimp. Shrimp is rich in iodine and calcium. Eating with onion rich in oxalic acid will form calcium oxalate, which is easy to cause stones.

4. Onions can't be eaten with honey. The two ingredients are mutually exclusive, and eating them together will have many adverse effects on people's eyes, which will easily lead to decreased vision and even blindness in severe cases.

5. Snacks such as sweets and puffed food. This kind of snack has a high sugar content, so it is not recommended to eat more, let alone combine it with onions, especially for children.

6. Patients with gastrointestinal diseases, eye diseases and skin diseases should not eat onions. Usually, they should pay attention to their physical condition to prevent bad symptoms. Onions can be eaten by the general population, especially for patients with cardiovascular diseases and dyspepsia such as diabetes, cancer, acute and chronic enteritis, dysentery, hypertension, hyperlipidemia, arteriosclerosis, etc., but special people must pay more attention when eating.

7. Onions should not be cooked for a long time. Thiourea butyric acid in onion is an oily volatile liquid, which will volatilize after long-term cooking, thus losing its hypoglycemic effect. Onions should not be eaten too much, because it is easy to produce volatile gases. Excessive consumption will cause flatulence and excessive exhaust, which makes people unhappy.

The above is all about what food you can't cook with when cooking onions at home. I hope it will help you!