The itching sensation appears due to the high histamine content in cod, especially if it is not stored properly before cooking. SEE MORE...
Don't just throw away the gills, here are some tricks for processing tuna so it doesn't make your tongue itchy.
How to clean tuna so it doesn't itch when you eat it, without the help of any tools or ingredients
Don't boil it first, this is a trick to remove tuna poison so it doesn't cause allergies or food poisoning
No need to throw away the tail, here's a trick to remove poison from tuna using 1 kitchen spice
