If you want to describe food as being not good in Engpsh, you can use phrases pke "not tasty," "not flavorful," or "not enjoyable." You can also say that the food is "disappointing" or "underwhelming." For example, you could say "This food is not very tasty," or "I was really disappointed by the lack of flavor in this dish." It's also possible to describe food as "inedible" if it is extremely unpleasant to eat or if it is rotten or spoiled.