Is vegetarianism Pareto efficient?

This occurred to me the other day when I was chowing down on some sausage and black lentil soup.

Sausage and black lentil soup is a variation of the recipe for black lentil soup. In fact, there is only one difference, in that you add sausages to the soup.

The cost of black lentil soup, for two servings, is around $1.40. The cost of sausage and black lentil soup, for two serves, is around $4.90. The difference, of course, is due to the sausages, which add 250% to the cost of the soup.

The carbon emissions will differ depending on the type of meat in the sausage. It’s very likely, however, that the same sort of increase will be reflected in carbon emissions.

Not to mention you don’t have to raise an animal just for the sake of eating it.

Now I’m no vegetarian – not at the moment anyway. But this is driving the point home for me.

Vegetarians have been saying this for years, but I’m only just joining the dots. The question is, how to get this point across to the general public?