[onesexybitch]

A can of water based tuna fish has
26 grams of class A protein 100 calories and costs less then a dollar

Protein doesn't have classes other than complete or incomplete. Most proteins are incomplete. Including tuna fish.

Canned meat of any kind also contains insane amounts of salt and often MSG and other nasty additives.

If you want fish, go buy a tuna steak or something. Still excellent protein, much better nutrition otherwise.

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You are correct, we no longer classify proteins as class A . It use to mean complete proteins all 20 amino acids available.- They have dropped that classification.

I state my opinion's from memory I don't know if they are true or not. No one knows what is true.