Hi Ludwig, interesting example. With Bear Grylls, he's probably talking about something being edible. We might also use this phrase when talking about health: e.g. 'it's good to eat bananas before playing sports'. In this usage, it seems to mean the same as 'it's useful to eat'. In my opinion, it's rather uncommon to hear 'it's good to eat' as referring to taste. We'd more likely say 'it tastes good' or 'it's lovely/delicious/etc.'. Hope this helps! Hugh

It could be either. Perhaps Bear finds an unusual berry in the woods which he knows is safe, and so he tells the others : "Don't worry, it's good to eat." Or he is saying that you shouldn't forget to eat. Eating is a good thing. I guess that the first situation is more likely in your case.