The COVID-19 pandemic brought new challenges to the way the world thinks about the sustainability of the planet and also brought new opportunities to emphasize conviviality, familiar links, cultural heritage, and exchange of knowledge on intergenerational gastronomy. This chapter will explore the opportunity to promote the Mediterranean diet as a solution to the improvement of food habits in the post-COVID-19 era. It will explore the future trends of Mediterranean diet concept use, specially focused on food industry/distribution and tourism as an inspiration to impulse more healthy and sustainable consumption in Portuguese restaurants. Gastronomy and tourism also will be presented as a sustainability safeguard possibility for the Mediterranean diet.