Vegans are the fastest growing segment of the vegetarian population.
Ovo-lacto vegetarian foods do not contain meat, fish, and poultry products, but do include egg and dairy products. While vegan dishes will sell to everyone, ovo-lacto foods will not sell to vegans. Because pure vegetarian ingredients are usually less expensive than animal ingredients, you not only can make some of your existing dishes more profitable, you can also inexpensively add lucrative new dishes to your menu. Be sure to promote your vegetarian foods. Feature them, advertise them, brag about them.