| Raw (young) | Poisonous (goitrin, thiocyanate, tannins, acetic acid, citric acid, caffeic acid, gallic acid, chlorogenic acid, coumaric acid) |
| Raw (mature) | Poisonous (goitrin, thiocyanate, tannins, acetic acid, citric acid, caffeic acid, gallic acid, chlorogenic acid, coumaric acid) |
| Dried | Poisonous (goitrin, thiocyanate, tannins, acetic acid, citric acid, caffeic acid, gallic acid, chlorogenic acid, coumaric acid) |
| Cooked with additives | Poisonous (tannins, acetic acid, citric acid, caffeic acid, gallic acid, chlorogenic acid, coumaric acid) |
| Cooked without additives | Poisonous (tannins, acetic acid, citric acid, caffeic acid, gallic acid, chlorogenic acid, coumaric acid) |
| Canned | Poisonous (tannins, acetic acid, citric acid, caffeic acid, gallic acid, chlorogenic acid, coumaric acid) |
| Core | Poisonous (tannins, acetic acid, citric acid, caffeic acid, gallic acid, chlorogenic acid, coumaric acid) |
| Oil | Poisonous (tannins, acetic acid, citric acid, caffeic acid, gallic acid, chlorogenic acid, coumaric acid) |