I bought some high quality salmon roe and it arrived solid frozen as a rock. I took the jar out of the freezer about a week ago to thaw in the fridge and haven’t opened it (I planned on having some this week, but ended up traveling). The jar says: “Unfreeze immediately before consuming.” So, it’s been sitting in the fridge/cold, unopened, for a week.
I plan to start eating some this week and estimate it’ll take me all week to use up the jar (one/two spoonfuls per day). I’m assuming the “unfreeze immediately” before consuming warning is an optimal freshness thing, not a food safety thing, but if anyone has any contrary thoughts (and there’s a food safety issue), I’d be curious to hear them.