Sorry, but you can't buy all offal in most American supermarkets. Living in NYC, where you can get both tripe and liver easily - you have to go to "ethnic" sto

Sorry, but you can't buy all offal in most American supermarkets. Living in NYC, where you can get both tripe and liver easily - you have to go to "ethnic" stores to get heart, kidneys or lungs. (I have yet to see any lungs or intestines in any US store... and I mean ANY. I'd have to go to a butcher and order small intestines to make sausages.) As for seaweed - it's primarily dried Japanese style seaweed that we can get in Costco's around NYC.