Thank you for the opportunity to help you with your question!
Hydrolysis is the addition of water molecule in form hydrogen ions and hydroxyl ions ,it helps in breaking the bonds .But in other words hydrolysis of fat is where enzymes like lipases the break ester bonds between glycerol and fatty acids, or
phosphate groups of the fats.
Please let me know if you need any clarification. I'm always happy to answer your questions.