What are the must-try foods and experiences in Kerala that travelers should not miss during their trip? I want to understand which traditional dishes, snacks, and beverages are most popular among tourists and locals. Are there cultural activities, houseboat experiences, Ayurvedic treatments, or festivals that make Kerala unique? Do different regions of Kerala offer different food specialties and attractions? It would be helpful to know the most memorable experiences and local flavors to enjoy while visiting Kerala.