- Is it vegetarian? It's kosher! All done!
- Regular fish (tuna, salmon, cod, etc.)
- If it's "kosher" meat (from a Kosher butcher or some grocery stores have a kosher meat section) AND
- If it ISN'T made/mixed with a dairy product (butter, cheese)
- Sea creatures (scallops, crab, shrimp, lobster, octopus, sea urchin ...)
- Some odd fish that don't have gils: catfish, shark, swordfish
- It's from a regular grocery store butcher or restaurant
- It's mixed with dairy (cheeseburgers are no-nos)