Of course, you could always substitute for one of the ingredients with a healthy, vegetarian alternative.
From the HufuTM FAQ :
What does HufuTM taste like? Does it taste like human flesh?Somehow, after reading that, and even though it's vegan-friendly and contains no animal products... I've lost my apetite. Even for Fava Beans and Chianti.
HufuTM is designed to resemble, as humanly possible, the taste and texture of human flesh. If you've never had human flesh before, think of the taste and texture of beef, except a little sweeter in taste and a little softer in texture. Contrary to popular belief, people do not taste like pork or chicken.