When you are asking for a description of something, we use "What is ... like?", whether it's a person, an animal, a place or a thing.
"How" is used for finding out a state - "How are you?" for example, or for the method of doing something - "How do they build aeroplanes?"
There are a few phrases where "How?" and "What...like?" can have similar meanings:
How is your food? (Is it a good meal? Is it tasty? Are you enjoying it?)
How was your holiday? (Did you have a good time?)
However, if you said to me "How is your food?" I'd probably simply say "Delicious", "Terrible" etc. If you said "What is your food like?" I'd probably elaborate "It's OK. It's a bit too salty and it's not as good as the food my mum cooks!"
Student or Learner