How to understand" Nothing beats a good bite that bites back”？

My mom gave me some wise advice:”Nothing beats a good bite that bites back.” She was talking about her love for bitter-tasting food like rhubarb.

Does "a good bite"here mean a good dish? then "bites back" must be a verb here, what does it mean?

Question

How to understand" Nothing beats a good bite that bites back”？

My mom gave me some wise advice:”Nothing beats a good bite that bites back.” She was talking about her love for bitter-tasting food like rhubarb.

Does "a good bite"here mean a good dish? then "bites back" must be a verb here, what does it mean?

Answer

This phrase is clever.
In this case, "a good bite" = something tasty / a snack
and
"that bites back" = The food does not surrender easily / the food has a strong flavor that fights with you a little bit.

Good luck!