Cambodia's culinary tradition evolved for centuries around Buddhist monasteries, where monks refined plant-based variations of royal Khmer dishes using galangal, lemongrass, and kaffir lime in place of fish paste. These vegetarian adaptations—rarely documented in colonial-era cookbooks—survived through oral transmission in temple kitchens and rural villages. Today's vegetarian cooking class Siem Reap offerings revive those techniques, pairing morning market sourcing with hands-on preparation in family compounds where grandmothers still grind spice pastes by mortar. The province's wet-rice paddies and riverbank gardens yield ingredients central to meat-free Khmer cooking: morning glory, banana blossoms, green papaya, and aromatic herbs that form the backbone of vegetarian amok, lok lak, and nom banh chok. Instructors demonstrate knife skills honed over decades—julienning vegetables into fine threads, bruising lemongrass stalks to release oil, folding banana leaves into steaming parcels. Each dish balances the five Khmer flavor pillars: salty, sweet, sour, bitter, and umami derived from fermented bean pastes rather than prahok. Sessions unfold in open-air kitchens where charcoal stoves and clay pots reproduce conditions unchanged since Angkorian times. Participants grind turmeric and galangal into kroeung paste, the aromatic foundation of Cambodian curries, then simmer coconut milk with palm sugar to achieve the caramelized depth characteristic of plant-based lok lak. The vegetarian cooking class Siem Reap tour structure mirrors traditional Khmer hospitality: market walk at dawn when vendors arrange produce by color and season, followed by three-hour cooking practicum and family-style lunch on woven mats. Recipes adapt to dietary restrictions—vegan, gluten-free, allium-free—while preserving the layered spice profiles that distinguish Khmer cuisine from neighboring Thai and Vietnamese traditions. Participants leave with handwritten recipe cards in Khmer script and English translation, a culinary passport valid across Southeast Asia's Buddhist temple networks.