Original sentence: The advent of sweet potato as a sushi ingredient is credited to chef Bun Lai of Miya's Sushi, who first introduced sweet potato rolls in the 1990s as a plant-based alternative to traditional fish-based sushi rolls
Edited sentence: The advent of sweet potato as a sushi ingredient is credited to chef Bun Lai of Miya's Sushi, who in the 1990s, first introduced sweet potato rolls as a healthy plant-based alternative to traditional fish-based sushi rolls