Micronutrient deficiencies are a major public health concern in low- and middle-income countries, where conventional supplementation and fortification programs are often limited by low bioavailability, fragile supply chains, cultural resistance, and poor long-term adherence. This research note proposes a food-based alternative model that leverages selected traditional Korean foods (K-foods)—gim (dried seaweed), kimchi (fermented vegetables), and cheonggukjang (fermented soybean paste)—as culturally adaptable and nutritionally dense components of official development assistance nutrition strategies. These foods provide functionally relevant nutrients, such as iodine, vitamin K2, probiotics, and fermentation-derived bioactive peptides, and offer benefits, including shelf stability, microbial resilience, and decentralized production. Employing a multidisciplinary clinical nutrition framework integrating food composition science, fermentation biology, public health nutrition, and development policy, this note presents a five-step research roadmap encompassing nutrient profiling, safety and stability assessment, cultural acceptability evaluation, community-based efficacy trials, and policy translation. By prioritizing food-based, multinutrient dietary interventions over single-nutrient strategies, the proposed model highlights a scalable and clinically relevant pathway for enhancing micronutrient status in resource-limited settings. This work contributes to emerging discussions on nutrition-sensitive official development assistance and highlights K-foods as potential tools for sustainable, culturally responsive global nutrition interventions.