I've been seeing tuna steaks quite frequently at HEB for really cheap now and I have a few questions on tuna like this. I love sashimi tuna but I was told you can only do this with really fresh tuna, so I'm assuming I can't do this with these steaks? How can you prepare your own sashimi without having a fresh tuna? Also do you think it would be okay to cook these steaks really rare, like sear them 1-2 minutes on each side? Any help would be appreciated.