The flavor profile of the vegan lentil wellington differs from traditional beef wellington in several ways. While traditional beef wellington is rich and meaty, with a savory umami taste from the beef, the vegan version offers a more earthy and hearty flavor due to the lentils. The lentils provide a nutty undertone that complements the other ingredients like onions, garlic, and herbs used in the recipe. Additionally, while beef wellington has a distinct meaty texture, the vegan version offers a softer texture but still maintains a satisfying mouthfeel.