You can eat sushi. As long as the fish has been frozen at some point in its journey from sea to rice, it’s fine. Since this is generally the case with places such as Itsu and Wasabi… well hello one of my two portions of oily fish this week!
Trying to work out where timned tuna counts in my quest for non-supplemental DHA (forbidden owing to blood thinners), however, is confusing me no end. Is it oily fish? Isn’t it? Opinion is divided. And how big is one portion anyhow?